Edit cls_pres_archer.2da. Change the values for all the columns on lines 3 and 4 to ****, or remove those two lines completely and renumber the remaining lines. Put the modified 2da file into your override folder or into a brand new hak file and add that hak to your module in the toolset.
If you're only going to play the default campaigns or single-player modules, the override version should work out for you (so long as such a module doesn't have it's own version of that 2da file in a hak. If it does have that file in a hak, you'll need to replace it with your edited version or go the route of a brand new hak with yours above the included one in the module properties.
