I was involved with skydiving for a short time many moons ago and we always packed our own main chutes. But I don’t remember packing the reserve chute. The skydiving club was a on the Army base and I think maybe we had official Army parachute riggers for that.
It’s about 45 years since my brief experience with sport parachuting, but as I recall reserve chutes had to be packed by a licensed rigger.