In tools like lsblk? Nope. They appear as directories, usually in the top-level subvolume, which typically isn’t mounted anywhere in the system.
Then you just create mount entries in /etc/fstab just like you would with partitions, this time just using the subvol= option as mentioned above. I don’t know if there are any installers that do this for you. Archwiki – as usual – has good documentation on this.