No. That should stay as is. My understanding is that UID 568 being in the render group should be the equivalent of "group_add" in a plain docker setup.
Jellyfin 10.10.7 (Docker)
Ubuntu 24.04.2 LTS w/HWE
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
4x WD Red Pro 6TB CMR in RAIDZ1