Transferring Character Ownership

Hey there, I'm doing a little one-shot within one of my current campaigns and I threw together the PCs myself. Is there a way to just transfer ownership of a character to another user?

AFAIK, only If the character was made using a 'Custom' GPlane character sheet:

-Get your player to create a blank Custom character sheet and to submit it to your game.

-Accept your player's blank character sheet

-open your source character sheet and Copy all the code.

-as a GM you can edit the Player's character sheet. Open it and Paste what you copied. Save it.

GM can edit Characters?! Yes, that's the bit I was missing!

Thank you!