Transmission

I'm using Transmission web client 2.82 on a Zyxel NSA325 nas, but I can nowhere change the default output folder...
I can change the location by right-clicking a torrent and set it's location, but I download using Radarr so that's really incovenient...

Does somenow know if and how I can change the default output folder??

Edit the download-dir attribute in settings.json while Transmission is not running. Or edit the attribute somewhere in the GUI. I don't now if that attribute can be edited with the standard web UI, but with Shift I know you can.