Some registration and sponsorship items might be limited in quantity. To set up a registration item that has limited quantity, navigate to Registration and then Items
Click the pencil icon next to the registration item that has a limited quantity.
In the General tab under options, find the Limited Quantity toggle and enable it.
Enter the max amount that can sell of this registration in the Quantity input.
Example: If selling hole sponsors for a 18 hole golf tournament, this would be set to 18.
Click Update Item to save.
Once that item has sold the quantity entered, it will be marked as Sold Out on the event site.
If your package has unlimited availability; disable the Limited Quantity toggle.