Here is what I did. I must warn that I haven't had any issues on my own machine doing this, but you might, so proceed with caution. Also, it's always a good idea to create a restore point before starting.
1. Create a folder on your other drive that you want the applications to install to. I used the same location on my system, only on the other drive.
2. Now open up regedit, and go to this location.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Appx
3. Now right click on the "Appx" folder, and go to "Permissions"
4. Click "Advanced", and click "Change" at the top to change the owner.
5. Type in "Administrators" for the owner, and click ok, then ok again.
6. This should take you back to the regular permissions window. From here make sure "Administrators" or your user name have "Full Control", and click ok.
7. Now double click on "PackageRoot", This should bring up the String Editor.
8. Change the "Value Data" to the new folder you created, and hit ok, and close the registry editor.
9. Lately, give your machine a reboot, and you should be all set.