You can edit user-defined member lists. For example, you can add or remove members or functions from a member list.
To edit a member list:
Open a report, and double-click a dimension cell.
In Select Members, select the Lists tab.
Double-click a member list.
In the Edit...List dialog box, do one of the following:
To add members to the Selected list, highlight the items in the Members, Lists, or Functions tabs, then click Add, 
, or Add Relationship, 
.
To remove members from the list, highlight the members in the Selected area, then click Remove, 
.
To remove all items, click Remove All, 
Click OK.
Click OK to return to your report.