Hello! Thank you for checking out my tutorial. =)

The default controller binds in Re;Birth 2 and 3 has A/X binded to cancel and B/O binded to confirm. To switch these binds is fairly simple.

If you're more of a visual person I have also uploaded a YouTube video to walk through this process as well.
https://www.youtube.com/watch?v=HYoyA5m3Vms

Please note that you will require the mouse for this to work:
Step 1. Make sure your controller is turned on
Step 2. Launch Re;birth 2/3 and navigate to Config
Step 3. Navigate to the Device Select panel and set Select to your controller
Step 4. Right-click to exit out the Device Select panel
Step 5. Select the Control Remap panel
Step 6. Click and hold the purple scrolling bar and hover downwards until you see the A/B button icons
Step 7. Select B with your mouse and press B on your controller. Press the confirm button.
Step 8. Repeat step 7 but for the A button. Make sure that the A button says it's binded to Button 1 and the B button is binded to Button 2.
Step 9. If done correctly, you can press B to back out the menu. Continue pressing B until it asks you whether you want to save changes or not.
Opt. If you want A as cancel and B as confirm, do the opposite for steps 7 and 8.
Step 10. Save the changes.

After doing that, your controller should now be rebinded! Thank you for reading my tutorial and hopefully this helped improve your experience. =)