What happens when two U7s both think it is their restart?

I’d give them a moment, but I would not leave two six-year-olds wrestling over a football in the name of player ownership. If one of them quickly says “it came off me, yours” then brilliant — let them solve it. If they are both completely convinced it is theirs, the facilitator can make the decision, give the ball to the right team and get the game moving. The important bit is not turning that into a full referee performance. No whistle, no lecture, no debate with the touchline. Just “blue ball, off we go”. Over time you will probably find they solve more of these themselves because the environment becomes familiar. Ownership does not mean adults can never help. It means we only step in when the children actually need us.