You can create Collections in an Account and assign Sites to them.
Tip: If you plan to add Collections, do so before creating users. This allows users to be created in their appropriate Collections.
Prerequisites
You must have the Account Owner role or higher.
To Add a Collection
Click Account in the sidebar.
In the right pane, click the Collections tab.
Click + Add Collection. The Create Collection window opens.
In the Create Collection window:
Enter a name for the Collection.
(Optional) Enter a description.
Specify the Sites to assign to the Collection.
Note: A Site can belong to only one Collection. To move a Site from Collection2 to Collection1: