The initial overview is just filtered on Supplier. Use the top drop-downs to switch to Customer instead of Supplier. Use the Select entity and Select mapping drop-downs to further narrow down your results. Use the Search bar to find specific relations. You can turn off the IC relation toggle (by default on) to hide the Relations that are intercompany (configured in Setup > Admin > Intercompany).

In the table overview below it is possible to sort columns by clicking on the column name.

Download the table by selecting the download icon top right.