If you're selling a product (or offering it for free) and you want that order to give clients access to extra products (combine multiple products into one), there is an easy way to do that with product Smart Actions.
Examples:
Go to settings of any product (Products page -> click on a product) and look for the section called Smart Actions.
Smart Actions allow you to do a few things:
In the selector pick an option, for example Give access to a Course, and then you'll be able to select which course you want to give client extra access to when they complete the order for the main product.
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