I see. The way trial groups work is that the program sticks to one trial group (one nominal depth) for the whole height. It selects the lightest total column from up to 3 trial groups, so long as the design passes the code check at all stories. That's…

Just edit the Column Design Table to include a group for the HSS 10x4s. Ram Manager manual, Section 7.5.3 Column Design Tables has details.