What is a difference between EVENT and ACTIVITY?

EVENT – examples of an event, e.g. congress, workshop, course, online course, scientific journal

ACTIVITY – examples of an activity: participation in an event (course, congress, online course, etc.), giving a presentation during an event, presenting a poster during an event, being an author of a scientific publication, being a member of a scientific committee, etc.

Please note that the credits are given by a subject matter. Therefore it is important to enter each presentation, poster, article title separately.