Rasha,
You are correct. Currently, channels cannot be used for column sections in a column-base plate connection. Currently, only I-shaped, tube, and pipe sections can be used for column sections.
Please make sure that you are running the current version of RAM Connection (v08.00.01.34). There was a program glitch in an earlier version of RAM Connection that affected the graphical display of bolts in T-sections. If you are running this version and the bolt placement looks incorrect, please share your model with us.
The version of RAM Connection can be verified by clicking on the help button in the upper right corner of the program window (look for the button with a white ? in a blue circle) and then click on the About link in the screen that appears.
Karl Gullerud