Create - TrueNAS
https://www.truenas.com/docs/core/applications/jails/create30.07.2021 · A data storage pool must be created before using jails. Make sure the pool has enough storage for all the intended jails. The Jails screen displays a message and button to CREATE POOL if no pools exist on the TrueNAS system.. If pools exist, but none have been chosen for use with jails or plugins, a dialog appears to choose a pool.
Installing Software
https://www.truenas.com/docs/core/applications/jails/software25.03.2021 · One way to find FreeBSD software is to use the search bar at FreshPorts.org. After finding the name of the desired package, use the pkg install command to install it. For example, to install the audiotag package, enter pkg install audiotag . When prompted, press y to complete the installation. Messages show the download and installation status.