Manual discharge

Can someone please tell me how to force a manual (not timed )discharge.

I did it before using the button at the bottom centre of the app, but I can't remember how I got to it. I could swear it was just on the home page at the bottom, but no.

Thanks

You have to enable Quick Settings Buttons in the preferences menu from the hamburger on the top left. Then you click on the battery symbol with a - on it.

Thanks!