Sure is, simply navigate to the ‘My Passes’ page at the top of the page:
Then scroll down to where it says ‘Want to enter the inner circle?’ and click on the orange plus icon.
You’ll arrive on the Discover section where you can see all Channels on SupaPass. If you don’t see the artist you are looking for, try the search box:
Select the Channel you were looking to subscribe to, then look for the ‘Become a SupaFan’ icon on the bottom right of their cover photo.
When completing the checkout process you will need to specify what tier of subscription you were looking to purchase, these vary per artist but the basic levels are explained here.