The weekly business review document outlines the steps in Stashfin's customer journey upgrade process. The process includes reverse OTP verification on the first screen, entering basic details on the second pre-approval screen, selecting a plan and seeing a soft eligibility amount on the common journey dashboard, completing OKYC verification on the fifth post-plan screen, providing bank details on the third post-plan screen, uploading documents on the fourth screen, adding additional details on the second post-plan screen, verifying professional email details, entering address details on the first post-plan screen, linking NetBanking or Perfios, completing ENACH verification on the seventh post-plan screen, receiving final approval, and viewing the upgraded dashboard.