Why do some rows appear read-only in the Payroll Sheet?

A payslip appears read-only (in gray) in these cases:

• The payslip status is Approved or Paid; editing is available only for payslips with the Generated status.
• You don’t have the Edit Payslips permission, or you have Edit His Department Payslips and the payslip belongs to an employee outside your department.

Even in editable payslips, the basic salary can’t be deleted, and loan and commission values can’t be typed manually.

To edit an approved payslip, unapprove it first from Payslips.