Note that the name of the video doesn't make direct reference to the spreadsheet, which is called Determining Competitive Equilibrium. This is the Edgeworth Box analog of finding the price that equates supply and demand. Note that to keep the graph readable the indifference curves of consumers A and B are not depicted. Only the offer curves show up in the graphs.
This is the audio only in case the student prefers to play with the spreadsheet while listening.