These parameters control the behavior of Conga Email Templates.
Track Activities is a required Salesforce setting for the object you want to send an email from.
Parameters
CongaEmailTemplateGroupfilters the list of Conga Email Templates that appear in the Email Templates list on the Composer user interface to those that match the specified criteria.
CongaEmailTemplateIdpre-selects the Conga Email Template specified in the Email Templates list on the Composer user interface.