Possible to display two different CallerID's...TEXT

Hello. Clearly it's simple to give users the ability to change what number they display when the call out.

But we have a group that is looking to allow users to show two different CallerID text options.

We have one Master Account Site which is more like a master billing Site/Account. No active users/lines. Under that Master Account, we have a Site. From this site, we want to give the users to that site the ability to show two different names.

Seems absent any customizations, the only way to accomplish this would be to create another Site and assign a second account/user to those who need to do this. They will have to have two accounts with two email addresses. They can log into one account/site via the RC app on their PC and they can log into the other account/site via the RC Web App. We may even have to assign a desk phone to one account/site.

Any feedback or suggestions would be more than welcomed. :)