Commodity orders are placed in lots and not in shares. For each commodity, the lot size is different and you can enter the lot size on both scrip info and order form page. For example, 1 lot of crude oil is 100BBL.
How can I trade in commodity options in Kotak Neo?
How do I activate Commodity Trading in the Kotak Neo app?
How many lots can I place for an aluminium order in commodities?
What are the trade timings for Commodity Trading?