Configuration with Application Deployment - Trying to add instance storage locations to separate disks

I don’t mean virtual directories, no. (those honestly might bugger with file permissions unless it’s just a regular symlink with the right file permissions).

On the left there should be a tab for datastores.

Odd that your post says that you’re on v2.6.0.2, but your Support and Updates there seems to think otherwise. What does the version info say under Support and Updates?