This may already be there for you Noelle - in the Users area, under Outbound Calls - check the Mobile, and Alternate outbound CID. (see image)
Normally the Alternate will be blank unless changed, and the Mobile may/may not be entered.
The Alternate is named poorly - it's the number in the dialpad on the RC webapp - that little pull-down arrow that allows you to choose which outgoing phone number to use. (which should really be an admin switch in my opinion to allow)
This may already be there for you Noelle - in the Users area, under Outbound Calls - check the Mobile, and Alternate outbound CID. (see image)
Normally the Alternate will be blank unless changed, and the Mobile may/may not be entered.
The Alternate is named poorly - it's the number in the dialpad on the RC webapp - that little pull-down arrow that allows you to choose which outgoing phone number to use. (which should really be an admin switch in my opinion to allow)
Hope that helps.