[Maleficus]

Use a proggie like Winzip or PakScape (which is what I use), to open the Fritz0.pk3 file and extract the fritz.campaign, then edit it and save it into the "Fritz/scripts" directory (you will need to create this directory in your FritzBot folder.

Make sure sv_pure is set to 0, and the game will use the campaign file you edited.

Better yet tho - would be to create your OWN campaign file. Give it a unique name and list the maps you want and use that instead. Use the Fritz.campaign file as a template, just changing the name/maps to your liking.