The following table describes the access associated with the various levels of the Custom Segments permission. Except where noted, this table assumes that the user has no other permissions.
As shown in the preceding table, even if a role does not have the Value Management Access permission for any segment, the Custom Segments permission always gives the user permission to view segment values. Similarly, the Create, Edit, and Full levels of the Custom Segments permission give the role some ability to create values, even if they do not have the Value Management Access permission.
However, if you want any of these users to be able to edit values on an existing custom segment, you may want to actively assign them the Value Management Access permission for the appropriate segments. Be aware that they can also grant themselves this permission on the Permissions subtab of the custom segment.