Ability for multiple users/extensions to use a physical phone

We're a mail order company currently using Mitel on-prem. The holiday season is very busy for us and we man our phones in multiple shifts. Would like to see the ability for a user or a users assigned extension be able to login to a phone to share the phone and workstation like we currently do with Mitel. This would greatly limit the number of workstations and space needed (which may be a limitation that stops us from proceeding with Ringcentral at our location)