Schedule changes to Call Queue membership

When a member of a call queue is scheduled to be unavailable to answer calls within the queue, I would like to schedule the changes ahead of time to remove that person and add other members to fill in for that queue (to cover for the unavailable person). Then set a schedule to switch it back when that person returns. The way it is now, even when I know ahead of time that these changes need to be made, I have to wait until the right time to make those changes otherwise it would be all wrong.if I tried to change call queue memberships.