FFL

Open a position.
In the grid input, on the "Edit" tab, click "Set FFL":
Under "Reference," select the reference to the lower transom:
- Lower edge of lower transom
- Axis dimension of lower transom
- Lower edge of last dimension
You can define an offset for door positions. Under "Offset", enter a positive value for an offset to top or a negative value for an offset to bottom.
Select "Display datum levels" to label the position with datum levels.
Under "Reference", choose the position of the datum levels:
- Upper edge transom
- Centre line transom
- Lower edge transom
Under "Height FFL", enter the height for the finished floor level.
Click "Ok".