Custom groups are groups that you create yourself. You can define specific folder and file permissions for the group in the different Connect Enterprise libraries. In addition, because a group can contain both users and other groups, you can assign permissions to a custom group by assigning it to the appropriate Built‑in groups.

For example, suppose you create a custom group called Global that contains a group for each country in which your company has an office (for instance, United States, Germany, and so on). Each country group could contain a group for each office in that country (for example, San Francisco, Boston, and so on). Within each of these offices, you could define more groups by job function, and then assign each of these groups the appropriate Built‑in group designations.

In this example, you created a hierarchical set of groups called nested groups, because each group is contained by the one above it in the hierarchy. By default, the nested groups have the permissions of the parent group, but you can expand or restrict these permissions by setting custom permissions for these groups in the relevant libraries.