Multiple Content Directories on Synology

[Barnz1]

I'm sure I'll feel silly when someone points out the answer, but I've searched the manual and the forums and can't work out how to do this.

I just sold my Drobo and bought a Synology, in large part so that I could use MinimServer. When I ran MinimServer on my MacMini, I could add additional Content Directories, but now on the Synology I can't figure out how to do it.

I have attached a screenshot of the MinimServer Status page, and there's one field to enter a content directory. If I try to add a second, it replaces the first.

Would someone please point me in the right direction?

Thanks and happy new year