Add storage to Syncthing
Install de Syncthing Plugin, ga naar de jail en open Shell.
Notice the two numbers 983. The first one is the user-id, the second one is the group-id.
Create the group first and then the user with the correct ID and put the user in the primary group syncthing.
Create Dataset Syncthing and change permissions:
Owner and Group: Read/Write/Execute
Add storage for the jail:
When using FreeNAS 11.2 plugin, mkdir after creating mountpoint