Table Method DBA calculation

Hello All,

I'm new to payroll.Can anyone provide me simple payroll configuration document.

I'm struggling with table method DBA calculation.please guide me in simple way also is there nay way to simply put formulas to calculate DBA.

for example -if I need to set up a Deduction component 'XYZ' which is based one two of my payment component one basic sal and additonal allowance

and the calculation formula would be ,if (basic sal+add allow)>=300000 per month then xyz will be 2% of 300000 else (when basic sal+add allw)<300000 2% of basic sal+add allowace.

Means it cannont be more  than 6000 per month .