XG Firewall 125 Static IP MAC mapping: Easier way to add a lot of user

Hi, I've set up an XG 125 and would like to know if there is a way to add a lot of IP MAC mapping user in one shot instead of adding one user at a time ( like with an excel sheet or something). I have a lot of user ( it's  for a school) and it needs to be updated every year.

Thanks