@Kajol
Afaik, there is no U/M feature in QB Online. Consider using an inventory managment app and integrate it with your QBO. You may start exploring from these options
http://www.primaseller.com/?utm_source=Affiliate&fp_ref=primaseller
https://go.tradegecko.com/register?code=fiat-lux
https://summit.zapapps.io/?ac=GRTspbJd
Hope it helps.
