Is there a way to add actor.firstSeen to the graph in the same way as the NPC deaths are shown?

Warcraft Logs
#1

I would like to create a pin that adds a line to the graph at the timestamp for actor.firstSeen for actors in the expression.

Example for expression Il’Gynoth add spawns:
actor IN ( ‘Corruptor Tentacle’, ‘Deathglare Tentacle’, ‘Dominator Tentacle’, ‘Nightmare Horror’ )

And then I want to see on the graph when each instance of the filtered adds spawn with the help of the actor.firstSeen, since the adds are not actually summoned by the boss - they just appear.

#2

Example:

https://www.warcraftlogs.com/reports/NWmHfxzZVaPQ2yth#fight=35&type=damage-done&pins=0%24Main%24%2377e61c%24expression%24target.name+IN+(+‘Corruptor+Tentacle’,+‘Deathglare+Tentacle’,+‘Dominator+Tentacle’,+‘Nightmare+Horror’+)+and+target.firstSeen+%3D+timestamp

#3

Thank you so much! This was exactly what I was looking for.