How to Add Button on Req Details Page

Hi all,

We want to add a Button on Req details page and some code in the Workflow will be triggered on clicking this button. Usually we can add the TextField or Dropdown List.

A Workflow Code can also be executed based on selection of value in Dropdown List on event "Req_FieldChange" BUT we need Button specifically.

If anyone has done this, could you please let me know how to implement it?

Thank you.

Regards,

Kedarnath