Phone call into Personal Room ?

[WizarDru]

We currently have a WorkPlace Pro account. We use the Personal Room for that account for an all day meeting, acting as a 'squawk box', where off-site employees connect to it so that they can talk to people in a shared workspace throughout the day. While I understand that people can join from the Zoom app on their phones, we wanted to see if there is a way to dial-in from a cell phone directly to the personal room. The knowledgebase and chat support doesn't make it clear to me if this is an option or not. I know that the functionality is supported by Zoom at some level.  What's not clear to me is if this is a feature that we need to purchase (being Pro suggests that we already have it, as we don't care about toll-free dialing) or if it is not supported for the personal room.

If anyone has any idea about how it works, I'd appreciate your insight.  Thanks.