Create a position with a lift and slide door and open the "Element" section in the input of elements.
On the "Edit" tab, click "Insertions".
In the insertion selection, click "Free configuration" icon (= the icon with the four question marks):
The program places the fixed leaf of monorails in a (theoretical) second track. In the next window, enter the value "2" under "Number of leaves" and "Number of tracks" and click "OK":
In the next window, customise the settings for the leaves and tracks:
One leaf must be defined as a fixed leaf. Under "Sash", define the fixed element by selecting "Fixed".
Under "Sash", select the slide direction of the second, movable leaf.
Under "Tracks", select the positioning of the leaf and fixed leaf on the tracks.
Under "Fixed sash for frame glazing", select "Inside" or "Outside" depending on the construction:
Click "OK" and follow the further course of the program in the input of elements.