Simple beginner's question: Allowing upload

How can I allow another person to upload into a specific folder?

I tried sharing an empty folder, but keep getting

"This directory is unavailable, please check the logs or contact the administrator"

when trying to access it.

What did I do wrong?
Thanks for any help.

Did you follow this advice?

I don't even know what logs are, much less where to find them.

Hi,

i would suggest that you're creating a new thread in the "oC server" category (https://central.owncloud.org/c/help/oc-server). When doing so a template is shown which is asking your various information about your environment (PHP version, ownCloud version etc.). This mandatory info is currently completely missing thus i'm closing this thread here (as it was also posted in the wrong category).

In that shown template a link is included which points you also to our FAQ about logfiles: