call halt/reboot as user

[Arno Steffen]

Happy NY to all of you!
I do have two questions:

1) I want normal user give the permission to reboot or halt the system.
With current implemented busybox it is not allowes - I just get a NO.

I already changed the link from /sbin/reboot to /bin/reboot or changed
permission, but this doesn't help.

2) when user is logged in, I can't change to root, as login command
can only be run as superuser.
How can I change the user?

Best regards
Arno