Like these script commands?
setcell "<map name>",<x1>,<y1>,<x2>,<y2>,<type>,<flag>;
- setcell "schg_cas05",114,51,125,51,cell_walkable,0;
- setcell "schg_cas05",114,51,125,51,cell_walkable,1;
setwall "<map name>",<x>,<y>,<size>,<dir>,<shootable>,"<name>";
disablenpc "<NPC object name>";
enablenpc "<NPC object name>";