There are many venues that have presales for certain events. At this moment it can be done by manually editing either an API or manual event.
The following fields should be filled out:
On Sale Date – This is the on sale date for the general public
Presale Start Date – this is when the presale starts
Presale End Date – This date should END BEFORE the ON SALE DATE STARTS.
Once the Presale date ends it will transition seamlessly to regular on sale.
Below is an example: