To add event details (including any interactions between aircraft and SAM as well as air boss remarks), find the event log located at C:\Program Files (x86)\Tacview\AddOns\XLSXEventLog\Simplified Event Log 1.3.xlsx
Open Event Log
Event Log
Give a copy to everyone who needs one - for each exercise you may fill out as many event logs as you wish and have Tacview merge them all together at debriefing time.
When you are ready to debrief, first load your ACMI file into Tacview, then load your event log(s) by navigating to Add-Ons -> Event Logs -> Load/Merge.