Enter what you've actually earned so far this year, plus what you expect for the rest of it — see exactly what's due at each remaining installment, for any entity type.
"As of Date" determines which quarterly instalments have already fallen due.
"Actual" = already earned/received up to the As-of Date. "Expected" = your best estimate for the remainder of the year, up to 31-March.
Enter the running cumulative total paid by each date that has already passed. Leave future instalments at 0.