Retaining Footings for a Basement Floor Plan.

[ian.felix1032]

Struggling to put wall (retaining) foundations underneath this floor plan. It won't even select the wall to attempt to place the retaining footings underneath. The flooring is just a 10'' wood joist with a wood finish, however, the structure is concrete with a wood finish. I don't know how to place the retaining footings down, can anyone help?

[ToanDN]

Draw retaining walls underneath the exterior walls where required and place wall foundation under the retaining wall.  You may need to create a plan view cutting the retaining walls then make the task easier.