The cartonpierre creates an object in the slab by default, with a selected profile. Sweep from the toolbar Cartonpierre click the icon.
Parent Based and Story Top Aligned modes in the toolbar are automatically active.
At the same time, the profiles to be used in the cartonpierre object are listed in the Section box.
If wanted, a different profile can be selected from the Section box.
Mouse over the slab and left click.
Cartonpierre will form under the slab.
If wanted, one of the free drawn and path based modes can be selected.