Setup GoodSuccess

Hey, I would like to understand what the recommended order is in terms of setting up the user tracking via GoodSuccess. We are close to the rollout of the GoodData Platform in the company and do not know if it would be possible to set up GoodSuccess previous to sending out the invitations to a specific workspace or is it required to have the users invited to that workspace already before it’s possible to set up GoodSuccess Tracking? 

Thanks in advance!