Without telling your distro this question is not helpful.
Discover uses packagekit, an abstraction layer that can do things like install, update, remove on many different distros.
So this might be distro-independent, but maybe not.
Try to enter in the terminal pkcon upgrade and if a GUI password prompt pops up, click on "expand" and see the action that is used like org.somenama.packagekit_update
This GUI prompt might also already be the one you described
I used Neon for a while. Again, can you please give the needed information. If the password dialog shows, at the left click on "expand"/"show more" and you see the exact action that is executed.
Then have a look at the rules in my linked repo, and replace the action in "libvirt" with that, and the group with "wheel"
(Use groups and send me the output, no idea if the sudo users are in the sudo group on Ubuntu)
Then send that rule, embed it in
```
Rule
```
To format correctly. I look at it and if it is correct, we go on.
@boredsquirrel
You need to create a polkit rule that allows authentication without password. I will see if I can send an example your way sometime this comming week. @KaKi87
Yes create the directory. This is a standard directory but KDE Neon may not use it. Also you need to place that policy there and reload the polkit daemon (no idea how to do that, just reboot lol).
And as I said, if the admin password window shows, use the "show details" button at the left to get the ID of the polkit action.