Changing a group can be done when you created an instance under a default group name and change it to another corresponding group. To change the groups base on your newly created group, you can check Group Configuration.
Changing Group of an Instance
Once a group has been created, right-click on the instance and select “Instance Configuration”.
Proceed with the drop-down under the label “Database Group” and select your newly created instance group. For this example, we’ll be selecting “New Instances”. Click Save.
You should be able to see the instance be moved to the newly created instance group in the navigation tree.