Select Global. "Global" means that the bracing will be determined by the global criteria (i.e. reset to the original default).

Single: To reset trial groups for 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 reset the trial groups. The text on the screen will update to indicate that the change has been made.

Fence: To reset trial groups for 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 for which trail groups will be reset. The text on the screen will update to indicate that the change 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 all steel columns in the model to return to the trial group default.