From the Admin Tools menu, click Users > User Collections. From the context menu for the collection you want to work with, click Add or Remove Users. Do either of the following:To add users to a collection, from the View drop-down list, select Users not in this collection. Click Apply. Select the users that you want to add. Click Add.To remove users from a collection, from the View drop-down list, select Users in this collection. Click Apply. Select the users that you want to remove. Click Remove.