The following table displays the permissions required by users for Approvals applications:

ApplicationVisibility
Conga ApprovalsTRUE
Conga Approvals SetupTRUE
Apttus__ApttusContractManagementTRUE
Apttus__ApttusContractManagement_LightningTRUE


For information on setting application permissions, refer to this Salesforce article.

.