In Permission it says:
"If you want to restrict your collection to be viewable only by people
who are given a special link, choose that option below."
But how I can get that special link for the particular collection,
please?
Thanks for explanation. I think few more words on Collections pages
would be very helpful. I supposed that it is probably the case as you
decsribed, but didn' t wish to send to someone link, that will not
work.