You will first need to create an FBP component before you may add it to any employee's salary.
The steps on how you may create an FBP component are here.
Here is a step-by-step guide on how you may add the FBP component after you have created it.
Step 1: Go to the People tab.
Step 2: Add FBP.
Step 1: Go to the People tab.
Go to the People tab from the left navigation bar -> Click on Employees.
Select the employee for whom you wish to add a reimbursement component by clicking on his/her name.
Step 2: Add FBP.
Go to the Salary tab of that employee.
Click on Update/Revise Salary.
Click on the Next button.
Click on the Next button.
Click on the Add FBP button.
Enter the FBP amount.
Click on the Next button.
Click on the Next button.
Click on the Confirm Salary button.
Please note that admins can provide the breakup of FBP as well if they wish by clicking on update FBP breakup or they can leave it as it is and have the employee adjust their breakup.