Customer Accounts - Can you add business name

Hi, 

I have created a members room which is currently functioning as my Wholesale Access area. 

When a wholesale customer creates their customer account and enters their address information there is no where to add their Business Name in a field. Or even at checkout. Is it possible to do this?

At the moment I have created a custom checkout form for the information to be added there, but I find this a bit clunky .... 

Any assistance would be appreciated. 

Kindest, Jana