The Vouchers permissions (under Administration in the tree) are now used differently than before.
- Vouchers - Access gives access to the Vouchers form, and View access (user can see vouchers/instances, but cannot add/edit/delete).
- Vouchers - Modify allows the user to add/edit/delete vouchers/instances, as expected.
This allows you to have some users with view-only access, and others with admin-level access (add, update, or remove as needed).