Disable follow symlinks

I know that I can set directory flags for each directory (https://www.urbackup.org/administration_manual.html#x1-640008.3.4).

But how do I have to set the flag to disable “follow_symlinks” for a directory?

If i set /follow_symlinks it will activate “follow_symlinks”? But its already active by default? How can I disable it?

Thank you.