Ability to DELETE Attached Devices from router

Please give us the option to permanently delete multiple attached devices, not just PAUSE/RESUME or BLOCK.  The current options still shows the devices on the app creating a long list for me to scroll through.  I can't even delete the IP address for each device to permanently delete it as I learned today from your tech support.  This shoudl be a simple fix, please help! 

Im using ORBI Router RBR20 with 1 Satellite, firmire is updated to V2.3.5.30, and using Apple iOS devices.