Only Simplicity HR Manager has the rights to create and edit Contracts.
Contracts play a major role in generating employees' payslips. A employee is required to have a contract with a covering duration to generate payslip. The contract also specifies the Wage, Salary Structure and any Recurring Allowances. The Wage will be taken as the ordinary wage for CPF contributions calculation.
The Salary Structure defines what are the items in a employee payslip. See screenshot below for example.
Payslip form with items.
In a Salary Structure, the items are called Salary Rules. Every rule is programmed to obtain its numbers from various ways of calculation. As the time of writing, all users have no access rights to edit any Salary Rule.