Shortcut to create role with many reports /tcode

Once I had couple of roles which where made just t hold reports. The number of reports where huge. Here is how I did it.
First create a CATT script with a dummy role and add one tcode. Make the role and T-code as variant. Once you have this you can add any number of tcode to any existing role. Icould resuse this tocreate another roles where I had to insert lot of T-codes.