diff --git a/src/schedule/core/systembuilder.js b/src/schedule/core/systembuilder.js
index 229fdbe1..d06f17e5 100644
--- a/src/schedule/core/systembuilder.js
+++ b/src/schedule/core/systembuilder.js
@@ -10,6 +10,12 @@ export class SchedulerBuilder {
    */
   systems = []
 
+  /**
+   * @private
+   * @type {SystemGroupConfig[]}
+   */
+  systemGroups = []
+
   /**
    * @param {SystemConfig} config
    */
@@ -17,6 +23,13 @@ export class SchedulerBuilder {
     this.systems.push(config)
   }
 
+  /**
+   * @param {SystemGroupConfig} config
+   */
+  addGroup(config) {
+    this.systemGroups.push(config)
+  }
+
   /**
    * @param {Scheduler} scheduler
    */
@@ -32,3 +45,8 @@ export class SchedulerBuilder {
     }
   }
 }
+
+/**
+ * @typedef SystemGroupConfig
+ * @property {import('../../type/index.js').Constructor} label
+ */
diff --git a/src/schedule/core/systemconfig.js b/src/schedule/core/systemconfig.js
index 803248a4..fc9f9ebe 100644
--- a/src/schedule/core/systemconfig.js
+++ b/src/schedule/core/systemconfig.js
@@ -1,6 +1,11 @@
 /** @import {SystemFunc} from "../../ecs/index.js" */
 export class SystemConfig {
 
+  /**
+   * @type {import("../../type/index.js").Constructor | undefined}
+   */
+  systemGroup
+
   /**
    * @type {SystemFunc}
    */
@@ -14,9 +19,11 @@ export class SystemConfig {
   /**
    * @param {SystemFunc} system
    * @param {string} schedule
+   * @param {import("../../type/index.js").Constructor | undefined} [systemGroup]
    */
-  constructor(system, schedule) {
+  constructor(system, schedule, systemGroup) {
     this.system = system
     this.schedule = schedule
+    this.systemGroup = systemGroup
   }
 }