How to set up opening balances (qty & cost) for inventory items?

New to Manager.
It looks really good!
Installed Version 15.3.42
Activated all modules.
StartDate set to 01.07.2012 (sic - got to start from three years ago)

The StartDate screen indicated “If start date is specified, all accounts will have an option to set opening balances as of start date.”

Defined 2 bank accounts plus some asset and liability accounts & found how to set their opening balances.

Where and how do you set up the opening balances, both quantity & cost, for the inventory items, please?

Have a look at Manager Cloud

Excellent - thank you kindly lubos