I added a light probe group to a game object (which is also a prefab) laid out the probes how I wanted them to be and then created another light probe group on another new game object (which is also another prefab) but they all seemed to connect to the last group on the first prefab, is this a normal thing? Can I not have multiple light probe groups?
I guess the wording “Light Probe Group” can be a little misleading, creating multiple game objects with Light Probe Group components added doesn’t mean they will be separate groups. you should see the probes linking in the scene view regardless of how many different game objects with Light Probe Group you have.
I don’t know what type of environment you’re working with or why you are looking to have separate groups, however light probes in Unity work in a way that you still need to sample light or darkness in other area’s of your level.
This blog post includes an example project which demonstrates a light prob workflow: Unity Blog
Using this rather old thread as it still fits quite well: is there any recommendation to use only a single light prob group and add individual probes there or to use multiple light probe groups with only few probes? Are there any performance implications of either way?