Partitions layout: how move home on different disk/partition?

I would like to install DietPi on a mini PC with Intel Celeron N5095 CPU. The PC comes with a pre-installed 256GB SATA SSD to which I would like to add a second 1TB SATA HDD. I would like to leave on the first disk (SSD 256GB) only the boot and root partitions (then maybe I also configure a file swap) and move home folder on a partition on the second disk (HDD 1TB), how should I proceed?

You can use dietpi-drive_manager to mount the additional drive and then create symlinks for the home directory. Or you mount the external drive over the home directory, but this would need to be done manually in /etc/fstab since dietpi-drive_manager allows to mount to /mnt only.