To Manage Group and User List Ownership

Open the User / Group Management dialog. (Tools > User Management)
To manage group ownership:
1. Expand All Groups, then select a group from the list.
2. Set Display Type to Members.
  Current owners of this group have a star icon next to their name.
3. To make a user or user list an owner of the selected group, right-click the user or user list from either the Available list or the Assigned list, then select Set Owner.
4. To remove a user's or user list's ownership of the selected group, right-click any owner from either the Available list or the Assigned list, then select Remove Owner.
To manage user list ownership:
1. Expand All User Lists, then select a user list from the list.
2. Set Display Type to Members.
  Current owners of this user list have a star icon next to their name.
3. To make a user or user list an owner of the selected user list, right-click the user or user list from either the Available list or the Assigned list, then select Set Owner.
4. To remove a user's or user list's ownership of the selected group, right-click any owner from either the Available list or the Assigned list, then select Remove Owner.
When finished making changes, click OK.
Note: If you were not able to make one of the selected users an owner of the group or user list, it is probably because that user's user setting, Enable group and user list ownership, is not turned on. This is an administrative user setting and can only be turned on or off by your administrator, in ProjectWise Administrator.