3G / 2G+ rule for on-site events

From all participants of the education and training courses as well as of the current courses we require

a proof of a complete vaccination (at least 14 days ago) or
official proof of having recovered from a Corona infection (the illness must not have been contracted more than 3 months ago)
or a current negative test result
For events lasting several days, an official test is required from each participant at the start of the event (on subsequent days, a self-test is sufficient).

The mask obligation remains outside of the own place.