I have been unsuccessful. Could someone more experienced write a little step-by-step, via Foris od Luci, not commandline if possible? Thank you 
Hello. Here is the link to the official project documentation answered your question (but only in Czech … you have to use Google translator probably).
Děkuji za odkaz 
I didn’t notice that page when looking through documentation. It’s a pity it cannot be set up through Foris or Luci.
But it can be set over Luci, unfortunately I can not make a screenshot, maybe from home