In order to do that, you'll need to have vMotion configured and enabled. You'll have to also initiate a manual migration in which you choose the last radio button to move the storage and compute (doesn't matter which is first). vCenter will then orchestrate a storage vMotion to the second host's datastore, followed by a regular vMotion (of the compute profile) to that host. In the end, the vCSA should be running on the second node. If you still aren't able to do this, please share some screenshots of your attempt and any errors so we may diagnose from there.