Tap Explore Opportunities.
Tap on a category to view opportunities.
Swipe up/down to choose an opportunity you'd like to partner with.
If the opportunity is Private, you'll have the option to "Apply" for your application to be reviewed by the brand for their approval.
You will receive an email when a brand approves or declines your application. To see the products you've applied to or joined, go to Your Products for the full list.