Need help with mounting home directory on another disk

I have a low end gaming pc which has 256gb ssd and 1tb hard disk. I managed to remove windows and install bazzite on ssd. After that i formatted the hard disk to BTRFS file system.

I want to configure my home directory and data directory from the hard disk as the ssd is only 256gb.

I am beginner with linux and immutable os is entirely new for me.
Can you guys please guide me through this