MarketingCampaignsReporting overwrite medium and source in javascript

Hello guys! I’m setting up Matomo on a website and i’m using the following plugin:
https://plugins.matomo.org/MarketingCampaignsReporting

In some particular cases I have to overwrite source and medium for the session when the users log in (in order to attribute conversions to our support team)

Is there any way to overwrite them or should I force everybody to use custom links?