In the NextGen UI for Concur Request, you use the More Actions > Edit Approval Flow selection.
To approve and forward a request to another approver:
1.) Open the request from the Approvals or Requests Pending your Approval page.
2.) Click More Actions > Edit Approval Flow.
3.) In the Edit Approval Flow dialog, click Add Step.
4.) In the User-Added Approver field, start typing the approver's name to search for the additional approver, and then click their name to populate the field.
5.) Click Save.
6.) Click Approve.
The request is approved and forwarded to the next approver.