Re: Making someone capable of editing their Character sheet?
Changing the character's portrait isn't related to editing the character sheet.
In the game, click on Character Details in the top left, then Edit Character Sheet, and scroll down to the bottom. Tick the box marked User Editable to allow him to edit his sheet.
To do them all at once, go to GM Menu, then Edit Character Sheets. Scroll down and click the link that says "character sheets are editable," and you can toggle individual sheets on or off, or, at the bottom, set them All On or All Off.