Use the Groups page to nest groups within other groups.
Go to Directory > Groups.
Locate the group that you want to be the parent group. You can browse or search
for groups.
Click the appropriate group name to expand the details pane.
Click the Groups tab.
Do one of the following:
If the parent group doesn’t have any nested groups, click + Add groups
manually. Locate the group that you want to nest, and then
click the + icon..
If the parent group already has nested groups, click the Pencil
icon and then click Add/remove groups. Locate the
group that you want to nest, and then click the +
icon.
The + icon changes to a check mark when the
group has been added.