Form: Do Not Allow Multiple Towers
The Options menu > Allow Multiple Towers command is a toggle that can be used to allow or disallow more than one tower (structure) in the model.
When the command is enabled, no form will display and the program will allow multiple towers in the model. The Edit menu > Edit Towers, Stories and Grid Systems command can be used to specify the number of towers and the stories and grid systems for each tower. A grid system should be defined for each tower or the tower will not have a grid system, which will make specifying structural components for the tower infeasible.
If this command has been enabled and then is disabled, the Do Not Allow Multiple Towers form will display. Use the form to select the tower that is to be retained. Also specify if the other tower(s) will be combined into the retained tower or deleted.