Select Global or Use Trial Groups. "Global" means that the trial groups will be determined by the global criteria.

If "Use Trial Group(s)" is selected, the trial group control below will become active. Click on the check boxes to the left to select a trial group to assign. Select size groups to be included in a trial group from the drop down lists. The sizes in the drop down lists are determined by the Steel Column Design table selected in RAM Manager.

Single: To assign trial groups to one column line, click Single. This will cause the dialog box to close and the target cursor to appear. Click on column lines with the target to make the assignment. The text on the screen will update to indicate that the assignment has been made.

Fence: To assign bracing to a group of column lines, click Fence. This will cause the dialog box to close and the rectangle cursor to appear. Click and drag the rectangle to include the column lines to which the assignment will be made. The text on the screen will update to indicate that the assignment has been made. (HINT: When assigning in Fence mode, it is often a good idea to be in plan or elevation to insure that only the desired column lines are fenced)

All: Clicking the All button will cause the dialog to close and the assignment made to all column lines in the model.