The drawing space allows you to draw over an architectural plan after importing underlays (. PNG's) into the workspace. Once imported, a quick sequence of calibrating and setting user preferences allows drawing thermal zones or spaces. The process is repeated for all zones and levels of the building.
Setting an Origin allows a common point of reference between Drawings. The location of the Origin is common between Drawings, typically a corner of the building, fire stairs or services area that remains the same on all Drawings.
Set the Origin of your Drawing by selecting ‘Set Origin’ in the drawing space ribbon. Left-click the point within the Drawing of the calibration and hold and drag to the endpoint. Set your length and press ‘Calibrate’.