Hi guys! Is it possible for an Item Fulfillment have impact on Expenses rather than on COGS? We ship out our products as gifts to influencers but that should be part of Marketing expenses rather than COGS...

That's a pretty common ask, unfortunately not possible natively. That said, if you have someone who knows scripting, you should be able to combine a checkbox with some GL impact lines scripts to make this happen.

There is a plugin to be used by developers called GL plugin that allows you to change the GL impact on transactions.