All Employee Salary get in Salary Structure Assignment at a time


I am trying to create payroll entry. Here I can see I need to add all employee’s salary in Salary Structure Assignment doc. But Here I need to add salary amount in the base field.

Is there any way to get all employee’s salary on assing Salary Structure Assignment without adding grade/department/designation wise in Base field. Salary amount may come Employee doc.

Is this possible? If anyone knew this or face this issue, please help me on this. It’ll be very helpfull for me.

Thank you