2 buttons in android bar Now I would like to have as few buttons in the android bar at the bottom as possible but I'm pretty sure both the back and home buttons are required. I believe this is true.

Could I assign the home button to activate the menu button on double click and just have the home and button button?  I'm rooted on 5.1.

Alternatively can I make Android activate home and back with volume up and down https://www.quora.com/Can-I-make-an-app-which-tracks-the-Android-volume-control-button-and-does-some-tasks-if-I-long-press-say-volume-up

Picture of idea
So I am self answering this can all be done using Lineage OS.  Install Lineage 
OS then go under Settings->Buttons->Buttons &amp; Layout.  You then can add and remove buttons to your hearts content.  Once you are done change Home double tap action to activate Recent apps switcher.