The data for this is created by the cash flow calculation.

You should first complete

7.1 Project Review

12.8 Cash Flow Calculation

Which Creates/Updates Project, selecting objects.

You are now in a position to review each of the cash flow objects, understanding the balance to be paid with expected payment curve, Start & Finish Dates.

Note, Each schedule object has a Muli Code Type 551 as default Cash Flow Rule.

On completion of timing adjustments, you need to run a new cash flow calculation for your changes to be recognised.

PS: These objects form the basis of the project schedule with the future addition of dependency links.