Little League base on balls and dead ball

[goldij]

In Little League (12 year olds), we have a disagreement how the following situation should be ruled: With a runner on third, a batter is walked. The batter proceeds to run to first and then continue on to second, with the intention of drawing a throw to allow the runner from third the opportunity to score. Currently, to stop this, the defense is throwing down to the first baseman who watches the runner from third and holds the ball until the runner on first gets there. Some other coaches contest that if the catcher throws it back to the pitcher, and the pitcher gets on the rubber, that the batter who walked cannot advance beyond first. Would the catcher/pitcher/coach have to ask for "time"? Would the PU grant time? Does it depend on where the runner on third is at that instance? Is this strictly a judgement call? Thanks for any help you can provide.