how do you install HP printer?

I have installed the drivers HPLIP but I cant use the all in one HP printer, tried setting up the device in the HP tool box but it says I have to add user to lp group so I tried adding a lp user but I must haven’t done it correctly as it still no work, so how do I add the lp user?
I don’t want to use cups printing.

okay, I got this sorted out, the printer is working, problem was I mistakenly added new lp user group in groups.