He's identified two issues that may cause problems with a team that, like mine, is pretty junior-heavy: scoring and umpiring. So here's my advice for Dave.
In the first place, get hold of a copy of Tom Smith's Cricket Umpiring and Scoring. It is the definitive text on how to umpire and score and gives a very good, if perhaps rather long, explanation of the correct way to fill out a scorebook. Secondly I'd add two rules:
- the captain needs to watch the batting without distraction so he knows how everyone is playing and can give appropriate advice and instructions, so he needs to have someone else do the scoring if at all possible.
- The scorer needs to be focused on the scorebook, so someone else needs to be keeping the scoreboard updated (unless he's in a scorebox that's designed to allow scorers to operate it from the inside). It doesn't ultimately matter whether the scoreboard is correct or not, but it very much DOES matter that the book is correct, and the laws specifically state that this is the scorer's duty, not anything else.
Hope that helps Dave, and best of luck. It's funny we've both been handed this same challenge at the same time, but there's plenty of examples down the years to show that slow spinners make the best captains!