How do I add a stipend to an employee's pay?

How do I add a stipend to an employee's pay?

The company is offering a home office stipend to remote employees, and this needs to be listed separately on the pay stubs since it is a flat amount and not related to hours worked. I can add it as a salary component, but can't figure out how to use that salary component with the actual employees. For our salaried employees, there is just a space for their salary amount.