Addition Of Time Wage and Payroll Wage type

Hi Experts,

I have a scenario, where client is request for adding the a wage type of IT 0015 with the number from RT(highlighted in yellow)The number is (highlighted in yellow) LOP of basic salary,Housing and transport. This comes form

Where the 1107 comes from absent time wage type 9991

How do i add up the IT0015 wage type to 9991

Regards,

Deepan