If Configured by an Administrator, Contributors can add Approvers to a workflow when starting a workflow, allowing Contributors to reorder the approval steps. 

To add an Ad-Hoc approver before starting the workflow, choose the Workflows option from the drop down menu for a Report.

Under the Approval Group section, select the Add Approval Step button.

Complete the following form, adding an Approver, any Admin Assistant(s) and Delegate(s) as required by your Administrator(s). Select the Save button to add the Ad-Hoc Approver.

NOTE: The Can Edit option will only be available if an Administrator has allowed Ad-Hoc approvers to edit.

NOTE: When adding an Ad-Hoc Approver , left clicking and dragging on the orange number for the related Approval Step will allow users to change the order of Ad-Hoc Approval Steps.

Choose Start Workflow when all Ad-Hoc Approvers have been added to the workflow.

Contributors who are Approvers can also add an Ad-Hoc Approver while after the workflow has started. Here's how: Contributor - Adding an Ad-Hoc Approver During a Running Workflow

Related Articles:

1. Contributor - Starting a Workflow
2. Contributor - Terminating a Workflow
3. Contributor – Workflow Field Explanations
4. Contributor - Adding an Ad-Hoc Approver During a Running Workflow
5. Contributor – Starting a Late Exception Workflow
6. Contributor – Starting a Mid Exception Workflow for Late Items
7. Contributor – Checking Item/Workflow History
8. Contributor – Terminating a Workflow
9. Workflow E-Mail Notifications