Scheduled/Automatic backups when using a Windows peer-to-peer database server?

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We're using a Windows peer-to-peer server to host our Timeslips 2019 database and I'd like to set up scheduled backups on the server. When I try to do so on one of our workstations it says that scheduled backups have to be set up on the computer hosting the database. I only use TSAdmin on the server since we only have 4 licenses, all of which are in use by our workstations. Should I use one license temporarily for the server just to get the automated backups running? Has anyone else seen this approach work?  

Thanks for any input.