Private Messages Only

Hi,

We have a directory with business. We are looking for a solution where we can replace the contact form that comes with theme and instead have a solution where users can send only private messages to businesses.

Can this be done with this Front End PM plugin please?

If so, how do we create logins for users and businesses as for business we are already using a theme called https://listingprowp.com/ and business profile is created using that theme?

Thank you
Sam