The Q-Sys ecosystem includes an event logging feature that can be used to keep track of what's happening on your core, including when the status of inventory items change, when clients log in to QRC, and when paging events occur. Q-Sys Designer even gives us a way to add our own messages in to the event log so we can keep track of our own custom events, as well. This video will introduce you to the scripting capabilities of the Event Log and how to navigate around some of their challenges.
Q-Sys Control Scripting Documentation: q-syshelp.qsc.com/Content/Control_Scripting/Using_Lua_in_Q-Sys/01_Using_Lua_in_Q-Sys_Overview.htm
Q-Sys Event Log Documentation: q-syshelp.qsc.com/#Schematic_Library/event_log.htm?TocPath=Design%257CSchematic%2520Elements%257CComponents%257CControl%2520Components%257C_____15
Also, check out my Q-Sys Plugin Development Playlist: th-cam.com/play/PL7LGeg9_pD6r6WqXZI0VIcza0JqYwwwEE.html