There are property managers and assistants, etc. but this client is really accessible and it's common for me to deal with her directly for some things.  They have some form of communications on the planes because she'll often call, text or email while she's in the air.  The husband I've only met twice (very briefly) during all the years I've worked for them.

Currently they own 3 Gulfstreams (his, hers and one for the son) and numerous smaller planes that are used for the business.  I think they employee 8-12 full time pilots.