In the General Report section you can combine the reports of different modules into one overall report.
To do so, select the items you want to add in the Report Builder on the left side and click > to add it to the selected reports on the the right. Alternatively, you can select an element, right-click it and choose Add to Report. Via the right-click menu -> Display you can have a look at the according report.
To remove an item from the report, select it and click < or right-click it and select Remove from Report. Via the right-click menu (or by drag & drop) you can also change the order of the elements.
Afterwards, click the Create button to create the report with the items you chose.
Then you can Export or Print your general report.