When you pick a report to be added in Anaplan XL Reporting, you have these options.

ParameterDescription
ParametersReport parameters are defined in the Anaplan XL Excel edition. You can set fixed values or pick one of the Placeholders to be set up when the report is generated.
RolesSets the Analysis Services role to run the report as, useful if you have cube security. This setting will be overridden by any setting made for a Distribution Group.
Attach AsDefines the format of the report to be delivered, either PDF or Excel file.