Turn off a virtual switch based on many?

Hello awesome smart people of SmartThings. First of all, let me apologize if this is out there but I was unsuccessful with my searches. I created a virtual switch to be used for IFTTT integration. The virtual will be set to ON if ANY in a list of switches is turned on; this piece works fine using built-in SmartThings routine. I want to set the virtual to OFF when ALL in the list are off - this is the piece I’ve been racking my brain over.

Many thanks for any input.

Custom automation creator in the new app or Webcore.

Just requested a webcore acct. Look forward to trying it out. Thanks!

You don’t need an account to add the app. Just follow the tutorial.

Awesome. Thanks!