The Districts Browser is the key to the process of creating and changing districts. While looking like other browsers in MapInfo Pro, the Districts Browser is actually a dynamic window that allows you to make changes to the groups and recalculates total values on the fly. You can immediately see the results of your changes. You then have the option to make the changes permanent or continue to try out new district realignments.
The Browser window lists the districts as specified in your table, the record count for each district, and aggregate expression columns that contain the net total values of your data. You specify these columns in the New Redistrict Window dialog box when you begin the redistricting session.