Block all products except specific ones

You have a new feature that allows us to block one symbol at a time. For example, we can now block /NQ, so that we can trade /MNQ, but not /NQ. Please add a feature to “block all symbols except the following”. This would allow us to put a check next to the products we trade and restrict all others. In this volatile environment, I want to only be able to trade micros, so I would check /MNQ, /MES, etc.