Sometimes is desirable to limit customers can only select certain products when they are filling out the form
To be able to do that, a few things need to setup
Figure out the products customers are allowed to register
Make sure the form's design has a Product field
Turn on the limit product search function in the form settings
First, you have to determine which products the customers are allowed to register, then you need to create a Product Collection in the Shopify admin that contains those products
Go to Shopify admin > Products > Collections > Create a new collection, then either manually add the products to the system or use the smart collection to select the products
Note the collection name and you will need that in a later step
Go to the App admin > Forms > Select the form > Design > make sure there is in the design
Make sure use the system product field rather than create separate dropdown field
Once the above steps are done, then go to App admin > Forms > Select the form > Settings > General > Limit product search > Enable it
Then select the collection you want to limit the search to, then click Add to add the collection
Make sure the collection is added and clicked Add
Then you can either Save the setting (this will allow the customer to search for the product within the collection), but you also enable Use dropdown on product search, then the product field will become a dropdown that allows the customer to select a product
Once all of the above step is done, go to the frontend and check out the form and make sure its working
