Is there a method to remove a member from a Planning form that is selected at a higher level?

Hello,

We have a Planning form, that shows a row in the Layout with the members defined as IDescendants(Capital GL Accounts).

There are a small number of accounts that we do not want to display.  Is there a way to tell the application to exclude certain accounts, without listing all the ones we do want to display. 

We are using 11.1.2.3.501

Thank you,