I don't know if this is useful or not, but when I was in college, we had a group that met once a month and the group leader always assigned one person to do the "advertising". He would say, " Make sure you get the meeting posted in three different ways." So, one month there would be flyers posted on bulletin boards, an ad in the school paper and an announcement over the school radio station. Another month there might be flyers, ads and a table with info at the football/sport games.
Anyways, we always had some people that came because of the "advertising", as well as the regular people. Half the battle of having regular meetings is people feeling it's worth coming to, and if new people are coming, it's always nice to see new faces.
Good Luck with the meetings ! Glenda