[TYPO3-commerce] mandatory fields / no login possible

[Basti Baumann]

Hello,

I´m using commerce in our Intranet.
This means that I don´t need all the mandatory fields (only firstname 
and lastname) cause all the products have to be picked up in my office.
Second problem:
I want to use the shop without login, but If someone wants to order some 
products more often he can´t order with his e-mail address cause the 
address is in the system already.
Is the a possibility to solve this?

Kind regards
Basti