Patreon Tiers to Limit # of Subscribers per tier

I have limited spots for higher-priced tiers on my Patreon.

I can only fulfil a limited number of subscriptions per those tiers, but Ghost doesn’t allow limiting available spots per tier.

For example, I release signed copies of my content, exclusive merch or subscription boxes for members subscribed to my $100, $300, $500.The tiers are available for up to 5 people vs Ghost’s unlimited spots per tier.

Can I get Tiers with LIMITED SPOTS?

Example (not mine):