How to copy a system to a new level

Issue:
Is it possible to copy a system to a higher or lower level?

For example: 
How to copy a ventilation system from level 0 to level 1 & 2.

Solution:

Steps:

1. Select the system you want to copy. Hover the mouse over the system and press the tab key to select the entire system. 
2. Use Ctrl+C to copy the system to the clipboard.  
3. Click Modify -> Paste -> Aligned to selected levels to paste the system to another floor.

4. Then select the desired level.