...
The datasource, select a Marketplace datasource (see Add and Manage Datasources).
The vendor associated with the marketplace partner account.
The time period you want to display and compare the number of your sales.
Compare with the previous period is a toggle that allows you to watch a comparison with sales of the previous time period configured.
The metric (aggregation field) either the type of transaction, region, hosting, or hostingtier size.
The aggregation time either week or month.
Finally, indicate if you want to use the current settings for all the compatible gadgets in the dashboard. This option eases the pain of configuring one by one the rest of the gadgets with the same default configuration.
...