Hello,
I’m sorry about the delay here – currently only tickets are able to use the shared capacity feature. However, you can create free tickets, so this would be your best bet if you need to set a shared capacity for multiple ticket types.
If this is a feature that you would like to see added in the future, can you please let us know over in our Feature Ideas Forum? This is what we use to gauge user interest in new features and help guide future development efforts.
I’m sorry I don’t have a better answer for you here, but please let me know if you have any other questions!
Thanks,
Jennifer