As of version 2023.b, Open BIM Quantities allows the subtotals in the quantity detail lines to be generated from the sets of measurement rules. To do this, the tags associated with the rules of measurement are used.
Now, in the “Tags” window that appears in the editing panel of an item, the “Generation of subtotals” option is included. From this field, users can choose whether to generate partial or accumulated subtotals. These subtotals are linked to the first tag entered in the list and a subtotal line will be created in the quantity details each time the value changes. For this reason, at least one tag must be entered in the item to be able to generate subtotals from a rule of measurement.