Which File Group In SQL server will hold SEPM Database ( when doing the restore)

Hi guys , I am trying to do the restore of SEPM Database in SQL Server via SEPM Bultin Back UP an Restore Utility but could not able to do it . The size of the DB is 6 GB . Please tell me which File Group in SQL Server SEPM Database will store or hold the DB when we are doing the restore. I see 5 SEPM file group files in SQL SEPM database instance. Kindly tell me of which file group file do I need to increase the space of .

Thanks