STAAD Pro: How to apply PARTIAL PRESSURE load to a Slab/Wall entity with a transfering this load to its boundary members?

Hello STAAD Pro Members.

Theoretically, STAAD Pro  helps apply PARTIAL PRESSURE load to slab/wall entity. How can we apply PARTIAL PRESSURE load to a Slab/Wall entilty with a transfering this load to MEMBERs that support this slab/wall?

Thanks and regards.