Stick ListView Section to the end of the list

[Wowalive]

Hi guys,

I'm currently working on a simple todo list and I get stuck in the positioning of the completed tasks. I would like to add these at the end of the list with the possibility to fold them in and out. Like here for example:

My current approch is using the listView sections. The sections are created at the current item at the moment. I want to have one "Completed"-section at the end of the list.

Is it even possible to achieve my idea with that approach?

Hope you can help me.

Regards,
wowalive