Questions about the panel_iframe

Configuration
1

2 questions :

now I have these 2 panels :
> panel_iframe:

configurator:
title: Configurator
icon: mdi:wrench
url: http://192.168.0.114:3218

plex:
title: Plex
icon: mdi:power
url: http://192.168.0.114:32400/web

But I see that configurator and plex are seperated by “hass.io” in the hamburger menu
How do I choose where I put the new panels?

  1. where can I find the list of the icons I can use?
2

Just a guess for 1. They may be alphabetical except for “special” ones like Overview at the top.