Selectable objects in multiplayer

Hi there! I'm creating a new MP game where every player has an amount of unit that can use. To make an unit be selectable i was thinking to use the owner property of the object. All the units at the beginning are on the server and i don't know how to handle this. My idea was to assign a public variable to every units (squad1, squad2) and then check the property of the object and change its ownership. Is there a better way?

How can I check wich player control squad1 and squad2?

Thank you for your time!