You will need to decide what to update or process in Step 3 here.
There are two sections here in Step 3, Process Option and Custom Amount.
'Process Option' is for you to tick only those Pay Elements that you want to process during this round.
'Custom Amount On" is only if you DO NOT want to use the default setting in the system. For example, if you tick the 'Basic Salary Total' box, instead of using the latest figure of Basic Salary from the system, the system will just follow the figure that you provided here.
Again this is not needed for this exercise hence I won't tick any boxes in the 'Custom Amount' here.
Click 'Next Step' when you are ready.