Hello,
Override default phone settings for Webex Calling
Control Hub settings for Webex Calling services now includes device override options for default phone settings allow admins to configure basic phone settings at the Customer, Location and Device level via control hub. This includes background images, long and short interdigit timers, station display name, line key labels, line key LED patterns.
You might want to check out the Cisco Webex Room User Guide - Devices Using Touch10. There's a lot of great info in there.
I hope this helps!