Go transaction SWDD
Enter your WF name and press ctrl+shift+f5 to create.
Following screen will be like:
Double-Click on ‘Undefined’ Step and Click on ‘User Decision’
Fill blank places required in the following screen. Then Press ‘Okay’.
We are going to add a mail after accept action.
Right-Click on ‘ACCEPT’ and click ‘Create…’
Select ‘Send Mail’
Fill ‘Subject’, ‘Body’ and click on Okay Icon.
Enter abbreviation and name of the workflow on the opening pop-up screen
Save and Activate application then press F8 to start.
Go to transaction SBWP
Make your last decision.