How can I permit my TimesheetStaff to record expenses?

First you will need to create a new role by cloning the existing TimesheetStaff role, and provide permission to record expenses for associated project(s). To create this role,

• Click the Gear icon and select Users & Roles.
• Go to Roles tab under Users & Roles.
• Click the clone button next to TimesheetStaff to duplicate this existing role.
• You will be navigated to the New Role creation form. Uncheck the Prevent timesheet staff(s) from recording expenses for associated project(s) option under Timesheets.
• Click Save.
• Assign this newly created role to your users and they will be able to record expenses for associated project(s).