I'm thinking this. Adding some new template tags:
[*EVENT_SUMMARY*] => Summary of Event (No Day or Session Summaries)
[*SINGLE_DAY_SUMMARY*] => Summary of Day
[*ALL_DAYS_SUMMARIES*] => Summary of all Days
[*SINGLE_SESSION_SUMMARY*] => Summary of Session
[*ALL_SESSIONS_SUMMARIES*] => Summary of all Sessions
[*DAY_SESSIONS_SUMMARIES*] => Summary of all Sessions for given Day
[*ALL_DAYS_SESSIONS_SUMMARIES*] => Summary of all Days and Sessions (in proper format like yo seen in calendar)
Then, when editing Certificate, you use one of them, or a combination of them. For example:
[*EVENT_SUMMARY*]
[*ALL_DAYS_SUMMARIES*]
[*ALL_DAYS_SESSIONS_SUMMARIES*]
To show all summaries. For example, if just the one Event Certificate.
Yes?