Can I add make it mandatory to add a phone number to a shop order?

You can make a phone number mandatory on an order as follows:
1/Select 'Settings' in the Web Office
2/Select 'E-Commerce' from the navigation on the left-hand side.
2/Select 'Shop Settings' from beneath E-Commerce on the left-hand side.
3/Select the 'Phone Number Required' tick box under Shopping Options.