Please note!
Before adding groups, it is recommended to consider a reasonable organization of the devices into groups
Click on the Add group button on the Groups tab in the classic user interface to open the dialogue for creating a new group.
Enter a Group name that describes the group so clearly that it can be distinguished from other groups.
Optionally check the Allow group members to connect checkbox if the devices within this group should be able to establish connections with each other. This sets the setting in the Internal Connections column to Allowed.
Click on OK to add the group.
The group appears in the group list.