Select one or more groups. > Group menu > Open
The Open command lets you temporarily ungroup and access objects within a group.
You can transform and modify the objects within the group independently from the rest of the group, then restore the original group using the Close command.
Procedures
To open a group:
Select one or more groups.
Choose Group > Open.
A pink dummy object appears, and the objects in the group are now accessible.
To open nested groups:
Select the group within the opened group.
Choose Group > Open.