I've been wondering the same! I reached out the scheduler about rotations but didn't hear back. If we're thinking of the same big batch of jobs for the jewelry client, it seems to be limited to around 5 shops per channel type. I've been able to do several shops through most channels, but I start to be unable to apply after 5(ish?) of each type. If you're getting bumped out of an application (like webform) try applying for another channel type (like phone or fb messenger) and you might get through.
Some folks mentioned that it's supposed to be listed in the shop description, but if it's there then we're both missing it.