Geometra works with formulas and variables to connect what you measure to what you want to price. Next to each value in the properties pane is a variable that can be used to call that value for that object and insert it into rows. As an example, using A in a row’s amount field will result in that value being used to base calculations off for total prices and time.
Using variables for rows is a good way to make them work across objects regardless of their placement or project. Effectively this means if you use A as the amount for a row that row will adapt to any given size or shape of the object. It also means if you must change the scale set for a blueprint everything will recalculate and update on the fly for everything on that page.
Learning and practising how to use formulas is a key element to maximising the usability of Geometra.