Sorry your post isn't clear - what do you mean by complimentary weeks? @Stone77
Start by checking the T&C of these complimentary weeks are you allowed to sell to a third party for profit? If so - go ahead and list them on Airbnb if that's the STR channel you want to use.
I'm a superhost but this is a community for hosts and guests to discuss Airbnb related matters. We wouldn't be able to advise you on how to sell 'weeks' (whatever that might mean 🙂 )