Thanks for the response, but I want to see that I got the whole thing right.
Because there I couldn't find any formal guide on how to add users, I got this far by trial and error, but I'm not sure it is the right way.
To add users, I first need to add them to the 'Local Users and Groups' on my server, and adding 'QlikView Administrators' in 'Member Of'.
Then, to add named licenses, I need to add them under System>Licenses>Server>Client Access Licenses>Assigned CALs.
But, if I want to add a Document user, In addition to adding them in the 'Local Users and Groups', I need to go to the document in Documents>server>the document name>Document CALs, there to put a number larger than 0 in the 'Number of CALs allocated' (apply) and then add a named user by clicking on the two people symbol, and writing 'computerDomain\UserName' manually (as i don't see the name anywhere there).
Again, I'm asking this because I had to figure all that out by myself, and I wonder whether it is the right way to do so, or if there is a better way.