The option to Interpolate between two existing levels, calculates the elevation at a specific point along a line connecting two selected points and places a new level at the associated elevation (Z position).
Define Block Options (Existing/Proposed, Level Tag, Symbol ) as required and pick Interpolate between two existing levels.
Follow the prompts to Select the first Level...
Follow the prompt to Select the second Level...
Pick a point between the two selected levels.
Note that levels will be placed at a location along the line between the two selected levels and perpendicular to the point selected.
