tried highlighting the simulator and the emitter, tried on a simulator I was working on and had all ready made changes and tried using it on a new system, no joy.
switched back to 12.3 and it still doesnt work, dunno whats going on.
Ok it seems to work once you click on something once you click under the particle systems submenu
This is normal behavior in the particle sim. Since a sim can have multiple emitters and each emitter can have multiple particle systems, and the Lifetime controls work on an INDIVIDUAL particle system, the Lifetime panel can't activate until a specific particle system is highlighted for editing.
oh I think I'm just not used to adjusting lifetime multiple times at a later date, and I usually do after changing my simulator
It looks like you're new here. If you want to get involved, click one of these buttons!