Key ideas
Invite each person with a branch role
In Settings → Members, Invite a member takes an Email or Phone, an Organization Role and, for a Member, a Branch and Branch role. A Loan Officer registers borrowers and handles loans and collections, a Branch Manager manages the branch, an Assessment Officer assesses loans, a Cashier pays out and collects, and a Viewer only reads.
Invitations wait until accepted
Invitations sit under Pending invitations until the person accepts. The email shows the organization, the role and when it expires, and they have seven days to choose Accept invitation. They sign in with the invited email address, choose Email me a code, check the branch and role, and accept.
Keep access current
Once accepted, everyone appears under Members. Use Manage access when someone's work changes, and Remove member when they leave, so each person has only the access their work needs.
Who makes and who checks
In Settings → Approval Rules, Add assignment names a Member, the action (Loan.approve), the Scope, and whether they Can make or Can check requests. Nobody checks their own request; where no checkers are named, owners and admins check. The Approvals lesson covers the decisions themselves.