diff --git a/CHANGELOG.md b/CHANGELOG.md
index de1cd94..dc7220c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## 1.6.0 - SoftLock
 - Added SoftLock on PC sheet
+- GmMonitor : Added ability to add or subtract fatigue/strife/void/casualties/panic points on clic.
 
 ## 1.5.0 - FoundryVTT v9 Compatibility
 - Updated the System to FoundryVTT v9.
diff --git a/system/lang/en-en.json b/system/lang/en-en.json
index e150463..bf8da27 100644
--- a/system/lang/en-en.json
+++ b/system/lang/en-en.json
@@ -148,7 +148,8 @@
             "title": "GM Monitor",
             "switch_view": "Switch View",
             "honor_glory_status": "H/G/S",
-            "focus_vigilance": "Foc./Vig."
+            "focus_vigilance": "Foc./Vig.",
+            "mouse_control": "Right click +1, left: -1, middle: reset to 0"
         },
         "max": "Max",
         "current": "Current",
diff --git a/system/lang/es-es.json b/system/lang/es-es.json
index d99ba5f..61cf2d2 100644
--- a/system/lang/es-es.json
+++ b/system/lang/es-es.json
@@ -148,7 +148,8 @@
             "title": "GM Monitor",
             "switch_view": "Switch View",
             "honor_glory_status": "H/G/S",
-            "focus_vigilance": "Foc./Vig."
+            "focus_vigilance": "Foc./Vig.",
+            "mouse_control": "Right click +1, left: -1, middle: reset to 0"
         },
         "max": "Máx",
         "current": "Actuales",
diff --git a/system/lang/fr-fr.json b/system/lang/fr-fr.json
index 2951717..58a0a04 100644
--- a/system/lang/fr-fr.json
+++ b/system/lang/fr-fr.json
@@ -148,7 +148,8 @@
             "title": "GM Monitor",
             "switch_view": "Switch View",
             "honor_glory_status": "H/G/S",
-            "focus_vigilance": "Att./Vig."
+            "focus_vigilance": "Att./Vig.",
+            "mouse_control": "Click Droit +1, Gauche: -1, Milieu: Remise à 0"
         },
         "max": "Max",
         "current": "Actuel",
diff --git a/system/scripts/gm/gm-monitor.js b/system/scripts/gm/gm-monitor.js
index ab70d12..f784cdb 100644
--- a/system/scripts/gm/gm-monitor.js
+++ b/system/scripts/gm/gm-monitor.js
@@ -38,7 +38,7 @@ export class GmMonitor extends FormApplication {
     _getHeaderButtons() {
         let buttons = super._getHeaderButtons();
 
-        // Send To Chat
+        // Switch view Characters/Armies
         buttons.unshift({
             label: game.i18n.localize("l5r5e.gm_monitor.switch_view"),
             class: "switch-view",
@@ -150,6 +150,9 @@ export class GmMonitor extends FormApplication {
         // Delete
         html.find(`.actor-remove-control`).on("click", this._removeActor.bind(this));
 
+        // Add/Subtract
+        html.find(`.actor-modify-control`).on("mousedown", this._modifyActor.bind(this));
+
         // Tooltips
         game.l5r5e.HelpersL5r5e.popupManager(html.find(".actor-infos-control"), async (event) => {
             const type = $(event.currentTarget).data("type");
@@ -243,7 +246,102 @@ export class GmMonitor extends FormApplication {
     }
 
     /**
-     * Get tooltips informations for this character
+     * Add or subtract fatigue/strife/void/casualties/panic
+     * @param event
+     * @return {Promise<void>}
+     * @private
+     */
+    async _modifyActor(event) {
+        event.preventDefault();
+        event.stopPropagation();
+
+        const type = $(event.currentTarget).data("type");
+        if (!type) {
+            console.warn("L5R5E | type not set", type);
+            return;
+        }
+        const id = $(event.currentTarget).data("actor-id");
+        if (!id) {
+            console.warn("L5R5E | actor id not set", type);
+            return;
+        }
+        const actor = game.actors.get(id);
+        if (!actor) {
+            console.warn("L5R5E | Actor not found", type);
+            return;
+        }
+
+        // Mouse bt : middle = 0, left +1, right -1
+        const add = event.which === 2 ? -999 : event.which === 1 ? 1 : -1;
+
+        switch (type) {
+            // *** Characters ***
+            case "fatigue":
+                await actor.update({
+                    data: {
+                        fatigue: {
+                            value: Math.max(0, actor.data.data.fatigue.value + add),
+                        },
+                    },
+                });
+                break;
+
+            case "strife":
+                await actor.update({
+                    data: {
+                        strife: {
+                            value: Math.max(0, actor.data.data.strife.value + add),
+                        },
+                    },
+                });
+                break;
+
+            case "void_points":
+                await actor.update({
+                    data: {
+                        void_points: {
+                            value: Math.min(
+                                actor.data.data.void_points.max,
+                                Math.max(0, actor.data.data.void_points.value + add)
+                            ),
+                        },
+                    },
+                });
+                break;
+
+            // *** Armies ***
+            case "casualties":
+                await actor.update({
+                    data: {
+                        battle_readiness: {
+                            casualties_strength: {
+                                value: Math.max(0, actor.data.data.battle_readiness.casualties_strength.value + add),
+                            },
+                        },
+                    },
+                });
+                break;
+
+            case "panic":
+                await actor.update({
+                    data: {
+                        battle_readiness: {
+                            panic_discipline: {
+                                value: Math.max(0, actor.data.data.battle_readiness.panic_discipline.value + add),
+                            },
+                        },
+                    },
+                });
+                break;
+
+            default:
+                console.warn("L5R5E | Unsupported type", type);
+                break;
+        }
+    }
+
+    /**
+     * Get tooltips information for this character
      * @param {BaseSheetL5r5e} actor
      * @return {string}
      * @private
diff --git a/system/templates/gm/gm-monitor.html b/system/templates/gm/gm-monitor.html
index b7569d6..14d7913 100644
--- a/system/templates/gm/gm-monitor.html
+++ b/system/templates/gm/gm-monitor.html
@@ -54,20 +54,26 @@
                 / {{actor.data.data.social.status}}
             </td>
             <td>
-                <span class="{{#ifCond actor.data.data.fatigue.value '>' actor.data.data.fatigue.max}}badvalue{{/ifCond}}">{{actor.data.data.fatigue.value}}</span>
-                / {{actor.data.data.fatigue.max}}
+                <a title="{{localize 'l5r5e.gm_monitor.mouse_control'}}" data-actor-id="{{actor.id}}" data-type="fatigue" class="actor-modify-control">
+                    <span class="{{#ifCond actor.data.data.fatigue.value '>' actor.data.data.fatigue.max}}badvalue{{/ifCond}}">{{actor.data.data.fatigue.value}}</span>
+                    / {{actor.data.data.fatigue.max}}
+                </a>
             </td>
             <td>
-                <span class="{{#ifCond actor.data.data.strife.value '>' actor.data.data.strife.max}}badvalue{{/ifCond}}">{{actor.data.data.strife.value}}</span>
-                / {{actor.data.data.strife.max}}
+                <a title="{{localize 'l5r5e.gm_monitor.mouse_control'}}" data-actor-id="{{actor.id}}" data-type="strife" class="actor-modify-control">
+                    <span class="{{#ifCond actor.data.data.strife.value '>' actor.data.data.strife.max}}badvalue{{/ifCond}}">{{actor.data.data.strife.value}}</span>
+                    / {{actor.data.data.strife.max}}
+                </a>
             </td>
             <td>
                 {{actor.data.data.focus}}
                 / {{#if actor.data.data.is_compromised}}<span class="badvalue">1</span>{{else}}{{actor.data.data.vigilance}}{{/if}}
             </td>
             <td>
-                {{actor.data.data.void_points.value}}
-                / {{actor.data.data.void_points.max}}
+                <a title="{{localize 'l5r5e.gm_monitor.mouse_control'}}" data-actor-id="{{actor.id}}" data-type="void_points" class="actor-modify-control">
+                    {{actor.data.data.void_points.value}}
+                    / {{actor.data.data.void_points.max}}
+                </a>
             </td>
             <td><i data-actor-id="{{actor.id}}" data-type="global" class="fas fa-question-circle actor-infos-control"></i></td>
             <td><span data-actor-id="{{actor.id}}" class="actor-remove-control pointer" title="{{localize 'Delete'}}"><i class="fas fa-trash"></i></span></td>
@@ -101,12 +107,16 @@
                 {{/if}}
             </td>
             <td>
-                <span class="{{#ifCond actor.data.data.battle_readiness.casualties_strength.value '>' actor.data.data.battle_readiness.casualties_strength.max}}badvalue{{/ifCond}}">{{actor.data.data.battle_readiness.casualties_strength.value}}</span>
-                 / {{actor.data.data.battle_readiness.casualties_strength.max}}
+                <a title="{{localize 'l5r5e.gm_monitor.mouse_control'}}" data-actor-id="{{actor.id}}" data-type="casualties" class="actor-modify-control">
+                    <span class="{{#ifCond actor.data.data.battle_readiness.casualties_strength.value '>' actor.data.data.battle_readiness.casualties_strength.max}}badvalue{{/ifCond}}">{{actor.data.data.battle_readiness.casualties_strength.value}}</span>
+                     / {{actor.data.data.battle_readiness.casualties_strength.max}}
+                 </a>
              </td>
             <td>
-                <span class="{{#ifCond actor.data.data.battle_readiness.panic_discipline.value '>' actor.data.data.battle_readiness.panic_discipline.max}}badvalue{{/ifCond}}">{{actor.data.data.battle_readiness.panic_discipline.value}}</span>
-                / {{actor.data.data.battle_readiness.panic_discipline.max}}
+                <a title="{{localize 'l5r5e.gm_monitor.mouse_control'}}" data-actor-id="{{actor.id}}" data-type="panic" class="actor-modify-control">
+                    <span class="{{#ifCond actor.data.data.battle_readiness.panic_discipline.value '>' actor.data.data.battle_readiness.panic_discipline.max}}badvalue{{/ifCond}}">{{actor.data.data.battle_readiness.panic_discipline.value}}</span>
+                    / {{actor.data.data.battle_readiness.panic_discipline.max}}
+                </a>
             </td>
             <td>
                 {{#if actor.data.data.commander_actor_id}}