We can grant items via the web admin. That's convenient. But it's not when I need to grant 100s of quantity. Can we please get a quantity argument for the web admin's grant function? Negative would be nice...
Alternatively (and more powerfully), get the ability to edit 'uses left' on existing item instances
You should probably also update this ticket with a note that it's implemented
https://community.playfab.com/questions/299/206710557-granting-an-item-to-a-player-in-web-admin.html