Note you need to start 2 1M foundations down below your main floor and 2 out to get the first set to work with your main floor Once your first set is built use the following steps to build height as needed

Put one 1M foundation attached to the top step in the direction you want your stairs Next put two 1M foundations below that. Next put 2 more out straight.

Delete the first 2 foundations (the ones going down not out)

This will make a level snap point to place your next set, Hold ctrl as you place your second set to help line up These steps raise 4m from the first foundation step to the top

Any questions hit me up on reddit