Exterior railing wall

[mtldesigns]

What kind of exterior porch railing wall type do you guys use or have made, mainly one that is under roof.  I've tried the one out of the box for a porch defined area and I get drywall on the outer edges,  I've also created one that had no drywall, but then it makes the wall above the opening concrete.  Is there a setting, especially for porches, that a "wall" above isn't created?  Been dealing with this issue since I can remember.. just never asked.