Within a Class, you are able to place limits on the number of purchasers before a Collection becomes unavailable. Additionally, you can limit how many of each fee are purchased.
To set a limit, navigate to Collections --> Classes.
Then, next to the name of the desired Class, click Options --> Settings.
Scroll down to the section titled "Additional Options".
For "Attendee Limit", insert the desired cap.
Click Save Changes.
This will affect all class times under the specific Class. If you have a different number of slots available for each class time, check out this article. Suggested Article: Override total attendee slots for single Class Time
To set a per-fee limit, navigate to Collections --> Classes.
Then, next to the name of the desired Class, click Pricing --> Fees.
Next to the desired fee, click Edit.
Next to the section titled "Limit Per Patron" click the checkbox.
Insert the desired cap and click Save Changes.
Maybe you have 20 slots overall for a class. However, you might only have 10 slots for adults and 10 for youth. you will want to set a total inventory for fees on a fee.
To set a total limit, navigate to Collections --> Classes.
Then, next to the name of the desired Class, click Pricing --> Fees.
Next to the desired fee, click Edit.
At the bottom of the page, click Advanced Options
Next to the section titled Total Inventory click the box that says Set total inventory for this price and insert the desired cap.
You can choose whether this inventory limit is for the Class overall or for each class time. For instance. If you have three class times in a class and a limit of 10 adult spots per class time, you would want to click "Per Class time". If it doesn't matter which class time it is for and you just have 10 adult slots available across all three class times, select "For entire Class".
Click Save Changes.