The Find Pipe Riser command is used to follow a pipe riser from one floor to other floors.
To find and follow a pipe riser, go to
Ribbon: DM Plumbing->Pipes-> 
Find Pipe Riser
Pulldown Menu: DM Plumbing->Pipes->Find Pipe Riser
You will be prompted to identify the pipe riser to be located.
Select riser to follow:
Find Pipe Riser Dialog Box
Floor: The floor on which the selected section of the riser is located.
Floor List: The list of floors the selected riser occupies.
Select a floor and press the OK button. If the selected floor is on the same drawing, the riser will be highlighted on the selected floor. A line will be displayed between the cursor and the pipe to help you locate it.
If the selected floor is on another drawing, your CAD program will attempt to open the drawing.