1. Go to BitcoinACKs.com

2. Find a pull request that you want to sponsor and click its Pledge ฿ button

3. Sign in to GitHub

4. Authorize the OAuth

5. Decide how many satoshis you want to pledge and hit save

6. Done! The total amount pledged has increased

7. When you're satisfied with the pull request, go to Bounties Payable and click Pay

8. Pay the developer's invoice to them directly, BitcoinACKs is 100% non-custodial

9. You're done! You'll see the invoice marked as paid or complete