Ok Well a Business Rep. Once you get in contact with one.. He or She will sat down with you and your spouse and go through your Profile, they can set it up to what suites you best and your business, For your employees.. they could give you for instance full range on your Device but restrict what you employees can do that is unless they need the same).
Take for instance my Dad has a work phone a basic one he's got a bucket of minutes he gets once a Month he vary seldom goes over the minutes but if he does it's on him and it come out of his Pay Check, he has text messaging as well but he never uses it and if wants a Ringtone he has to buy it them but with my Dad all needs is a Loud Ringtone because it's hard for him to hear and there are a few on the phone he likes..
But i think getting with Business Rep. or The Manger that's going to call should be able to straiten things out for ya.. Good luck.. b33 
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