Multiple Keys on PGP Viewer IOS app

Hi Guys,

Looking for some assistance here.  I've asked Mr. google, but to no avail.  Here's my question... Can the mobile PGP Viewer App for IOS handle keys for more than one domain?  I ask because the division of my company has our own instance of exchange with email address @abc.com for example.  We're standing up PGP now.  My parent company has a pgp server with domain def.com.  All employees have an email address in both organizations.  As you can guess, our systems need to be completely seperate, so no sharing on servers of private keys.  The question is, is it possible for the PGP Viewer for IOS to support multiple keys?  I've searched everywhere and came up with nothing.

Thanks,

Mike