If I’m recalling exactly, it is a “go to record fire” button that doesn’t show your record shots until completed. So shoot sighters until ready or commanded to halt, hit the button on the screen, and start record. When done they collect your score through the chosen method (export, screenshot, etc.) It works just like a normal match except you aren’t reliant on the skill of your target puller to get quick turnaround on sighters, they come on screen a split second after they cross the target.
Or, in the case of
@Mulligan 600yd program in Western Colorado, all the targets are on the screen at once and you freely move between them to complete your targets as a SR benchrester might with sighters on bottom and records on top. This will be harder at 1000yds because of how big the targets are. CRC might be able to pull it off by having each shooter get 2 targets (spacing shooters every other bench) although that isn’t currently the plan this year. This would mean the shooter would have 2 shotmarker targets to switch between to see sighters and shoot record with.
One last thought: at 600yds, guys with very expensive scopes can sometimes see their bullet holes. This is an advantage they bought that e-targets would give reliably to everyone in the match - leveling the playing field a little.