You can add fields to standard reports if you have the option and password for Advanced Report Creator.
Follow the below steps to create a new report and add the required fields.
From the Proclaim toolbar, select Advanced Report Creator.
From the standard report list, select the report you want to use.
Click Create Report then, from the selected report, click Copy.
Rename the report by typing a suitable name.
Click OK then select the folder you want this to go into.
At the top, click the FIELDS tab then click ADD FIELD.
Add the field(s) you want to add, then click LAYOUT and add this to the reports template.