Connecting to printer at workshop from my home PC

Hello there,
I’m new so sorry if this is considered a stupid question.

I’ve received my Form 3 today and it is placed in my workshop, connected to wifi. It works great with a PC there, which is also connected to wifi there. A guy who delivered us a printer and set it to work said that it is possible to upload a print even from home. But I was so intent, that I forgot to ask how exactly can I do it.

I downloaded PreForm on my home PC, logged in Dashboard (show the printer is offline, although it is on and connected at the workshop). When I clicked “add” on printer list it says that I need to write IP adress. I will do it tomorrow, but is it enough?
What else can I do to connect ii to my home PC and why does Dashboard show the printer is offline?