Aerophone Pro AE-30: Can you create your own original fingering?

Yes.
Perform the following procedure.

1. Press the [MENU] button.
2. Use the [-] [+] (</>) buttons to select System - “User Fingering.”
3. Press the [MENU] button.
4. While holding the key with your desired finger, press the octave key [+2].
   - If a fingering is not assigned to that key, “None” is displayed. Use the same operation to only change the name of the note for a fingering already assigned.
5. Use the [-] [+] (</>) buttons to select the note name to assign to the fingering.
6. Press the [MENU] button.
   - The Select Note screen appears.
7. To save, press the [+] (>) button.