stock add-only permission (ITEMS)

[Geraldo]

If I pay $5 for one employee account (for my manager), part of his work is adding stocks. I would like the manager to have “add stock only” permission.

But the only option I found is “Manage items”, which allows them to add, edit, or even delete items — so they could manipulate stock data.

I can’t find a permission for “stock add-only”. Do I need to upgrade to the $25 bundle to get this level of control, or is there another way to limit permissions just for adding stock?