In the Family Editor, open a floor plan view of the family.
On the Properties palette, select the Room Calculation Point parameter in the Other section. A green dashed line with arrowheads indicating the From/To direction is now visible in the drawing area.
Select the From/To Path and relocate either end to a position that will clearly determine its intended room.
If necessary, Use the flip control at the center of the From/To Path to reorient the direction.
Note: If the family needs From/To Path adjustment in the Z-axis, open an elevation or 3D view to access movement controls. Relocate the point similarly.
Click Modify tab Family Editor panel Load into Project.