Secondary units for quantity in Zoho books.

Secondary units for quantity in Zoho books.

Hi there,

I sell plywoods of various sizes that are measured in sq.ft (square feet). So, my pricing and quantity units are also based on sq.ft - Ex: Rs. 100 per sq.ft.

Now, I like to track my inventory and sales in terms of "number of plywoods" also, in addition to sq.ft. Please assist how do I achieve it.

Use case:
In stock: 10 plywoods of size 32 sq.ft each.
Total sq.ft in stock = 320 sq.ft
Price is Rs.100 per sq.ft

When I sell 5 plywoods, the remaining inventory will become:
Number of plywoods = 5
Sq.ft = 5 * 32 = 160 sq.ft

In Zoho Books, I am able to track only the primary units (sq.ft). How do I now track the secondary units as number of plywoods in stock?