Limit number of forks per instance group

Hello! does anyone know of a way to limit the number of forks per container group ? currently you can only do so across all jobs using that group as per the GUI:

Maximum number of forks to allow across all jobs running concurrently on this group. Zero means no limit will be enforced.

Ideally what would be nice is to set a limit and create different “flavours” for different workloads, e.g fork4 for small deployment, fork20 for big deployment, etc