Workflow in SAP Inbox - Right Click to Cancel the Workflow

Hi,

Is there a way to cancel the workflow item in SAP inbox?

I have a requirement of scenario like below:

1) user submit shift plan. A workflow item created in SAP Inbox for manager to approve it.

2) user feel want to cancel the shift plan submitted due to further changes before approve it. Thus in SAP inbox, user want to right click the mouse button, an option to cancel the workflow be available.

Can this be done in SAP Inbox?

Hope someone can help me on this.

Many thanks in advance.