The first thing that you need to do when creating your own Custom Report is to select the different widgets that you would like displayed. As you might already know, you can add the widgets that suit you best by choosing from the different widget categories available and then explore their amazing potential.
Τhe Mailing Lists Category is divided into two subcategories for you to choose widgets from: Mailing List that includes information regarding your email list performance and Members that includes information regarding your members' activity.
In the Members subcategory, one of the widgets included is named "Mailing List Membership". This widget offers you a display of all the mailing lists a member belongs to. Please note that said widget can be filtered by Member.
1. Select the Mailing List Membership widget by clicking on the Add button and then tap on Save.
2. Tap on the field located at the top of your widget's frame and type in the member's name whose membership you want to check. Your widget will then be filtered by this particular member that you set.
Please keep in mind that there are several filters to choose from that can be applied to the corresponding widgets. Furthermore, you can always export the data of each widget in order to have them at your disposal at all times.