[AI] How to advertise a new labelling campaign?

Hello All, I have created a new labelling campaign, "Newcomer Session Quality" which describes observes the *sessions* (temporally related edits) of users on their *registration day* [1]. The idea is to detect potentially productive newcomers may be struggling with onboarding and might otherwise get bitten. I was wondering if there was a standard way to advertise for volunteers for a new campaign on-wiki? Would it be OK to leave talk-page invitations to users who have signed up for updates on other campaigns [2]? By the way, right now the campaign is just in enwiki for testing, but I have 6 other languages ready to go if enwiki labelling goes well. [1] https://en.wikipedia.org/wiki/Wikipedia:Labels/Newcomer_session_quality [2] https://en.wikipedia.org/wiki/Wikipedia:Labels/Edit_quality Make a great day, Max Klein ‽ http://notconfusing.com/