If you need to sell merchandise, meal tickets or guest tickets for example, during the registration process, you can create a store
Where to go?
From your event dashboard go to "Registration configuration" -> "Stores"
Then, creating a store is a 3 steps process.
1st step: Add a new store
Click on the 
button and fill in the pop up:
Store name: Will display at the top of the screen
Store display: You can choose for who the store is available to access: for the entire event registrants, or only to people registering for a specific category (individual or team)
Store type: You can choose if the store is available only during the registration process (in-process) or for anyone accessing your registration landing page (standalone). In the latest choice, someone doesn't need to be registered to your event to buy the store products.
Optional: Store open and close date / Status If you need your store to be available only up to a certain date, you can set up a date range and the store will open/close automatically
Single Purchase: The item can only be purchased once
Required Purchase: Individuals must purchase an item from the store
Are the items in this store mandatory purchase options?: The item is automatically added to the individual's cart
Once you've created your store, it will show up on your dashboard as below. However, you now need to create the store items you want to sell.
2nd step: Add a store item
Click on the 
button and fill in the pop up:
Store item name: Eg. "T-shirt" "Meal ticket" "Book" ect...
Display Order: Will define the order the items will show up on the screen when people open the store
Images: You can upload images do give people an idea of what they can buy or an icon to make your store more user-friendly
Description: Will help people to understand what exactly is the product.
Tax & fee structure: We charge processing fees on store products also, it's up to you to decide who's paying for those fees. You can also add taxes if you need to collect any.
3rd step: Add purchase options on your store item
Each store item needs to have at least one purchase option (price) that people can choose from. If you need to add more than 1 option, select the 
then select 
For example, if you're selling T-shirts you might want to sell 3 different sizes:
Purchase options: Name of the product to buy that will display on screen for people
Price: Can be the same of different for each option
Unlimited: If you don't have a limitation on the number of the item that can be purchase, kept the unlimited option to "Yes" - If you have only a specific quantity in stock, select "No" and enter your in-stock quantity in the "In stock" column.
Qty sold: As people go through your store, you'll see the quantity sold in your dashboard in this column.
Display order: The order the option will show up on the store for people to choose from
Per registration limitation: If you want registrant to be able to buy only 1 T-shirt, for example, you can set the per registration limitation to 1
Available: If you want to hide an option at some point, you can simply set the available option to "No"
You can also:
4th step: Access your store
If you choose the "Standalone" option, your store will be available from your registration page:
And it will look as below:
