The 'New session' wizard has one toggle that changes the whole experience: whether matches are attached. Here's when to use which and what it actually changes.
Training (toggle off)
Simple session: date, time, deadline, optional location. No opponent, no competition field. Expected responses are present, late, absent; non-responders stay in no-response state (visible and surfaced). It won't appear in Mondo FC: training only counts for attendance.
Match day (toggle on)
Same response list, but the session contains one or more matches. For each you set opponent, competition, home/away, kickoff time (can differ from session time, useful for back-to-back). After the match you open it and record result, lineup, per-player stats (goals, assists, yellows, reds). All of this lands in Mondo FC.
Guests (trial players)
The Include guests toggle is available for both training and match days. When on, players in the Guests list (the dedicated section of the roster) also receive the response link. Useful for trying out a new player without committing them to the regular roster.
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