diff --git a/src/specificClass.js b/src/specificClass.js
index 143ac13..a3a91b5 100644
--- a/src/specificClass.js
+++ b/src/specificClass.js
@@ -81,7 +81,14 @@ class MachineGroup {
         this.dynamicTotals = this.calcDynamicTotals();
     }
 
-    registerOnChildEvents(){}
+    registerChild(child,softwareType) {
+        this.logger.debug('Setting up childs specific for this class');
+        
+       if(softwareType == "machine"){
+           // Check if the machine is already registered
+           this.machines[child.config.general.id] === undefined ?  this.machines[child.config.general.id] = child : this.logger.warn(`Machine ${child.config.general.id} is already registered.`);
+       }
+    }
 
     calcAbsoluteTotals() {