Hi Aman
If you expecting this result
11.11.15 20
16.11.15 20
21.11.15 20
26.11.15 20
etc
You also need to set the takt time field to 5. This becomes and offset between each requirement and should give you what you are looking for. That's in working days so the exact result is depended on your factory calendar.
Check the documentation for the field because you also need to be aware of the configured attributes of your lot size.
Thanks
Robyn