Go to Environment > Assets & Groups > Network Groups.
Click New.
Type a name for the new group.
Select networks from the network structure or enter a specific one in the Filter box; click Apply.
The chosen network appears in the area below.
if you make a mistake, use the Delete () button to remove it.
(Optional) Type a description that identifies the network group.
Go to Environment > Assets & Groups > Network Groups.
Select the network group and click Modify.
Make the changes and click Save.
Go to Environment > Assets & Groups > Network Groups.
Select the group and click Delete Selected.