I had problems for a while with the start of the meeting creeping back - which since we only have 1hr 15, we couldn't afford. So I started doing Brownie ring at 6pm sharp regardless of how many Brownies were there to join in. Anyone who arrives late slips in quietly and joins in with what we are doing - it's only fair on those who make the effort to be on time.
I have found that Brownies and parents have realised that being late means risking missing out on activities, so now virtually all of them are there by 6pm most weeks, without us having to say anything.
'If life were simple - it would be boring!'