Well, here is what our ward is doing and it is working so far, we were also skeptical but have had a great turnout. We have tried to schedule things on a rotating basis so its easy to remember

We still have a big HFPE night once a quarter on our normal Enrichment Night. For the months where there is no formal night, we have what is called a "Sisters Night" where we usually have 2 or 3 activites for people to attend if they want to. Its very casual but we still have a nursery for that one night a month. We have one activity that is scrapbooking or finish your craft night, the other activity this month was playing basketball because the stake tournament was coming up, and the 3rd activity was learning to crochet. So, we think we will always have a scrapbooking/finish your craft activity every month on the 3rd Thursday unless there is a formal HFPE planned on that night. The "active/exercise" activity will be something like yoga or basketball or similar, but it probably won't be every month. The first activity is set up to be a 2 month activity. For instance, this month for learn to crochet, the first night they learned how to crochet, the basics....and then the 2nd meeting one month later was a follow up where they met and went over any questions or learned new stuff.

So, for this next month, we will have a new 2 month activity to replace the crochet....flower arranging (one month will be real flowers and the next month one will be silk) and then the scrapbooking/finish it class.

For the other activites they meet once a month or once a week. For instance, the play group for kids meets every Monday of the Month and they move around to the different parks every week, so its park A for the first week and park B for the 2nd week and its the same every month.

We also have a book club that meets on the 4th Thursday of every month.

There is a Temple group that meets on the 2nd Thursday of the month.

And, there is a lunch group that goes out to lunch on the first Thursday of the month.

While I am sure this is clear as mud, here is the basic run down....

Weekly group:
Mondays-Play group at 10:30 am

Monthly group:
1st thursday-lunch group
2nd Thursday-Temple Group
3rd Thursday-Formal HFPE OR night with 2 or 3 activities (one being scrapbooking and the other rotating, the 3rd one being an occasional exercise class)
4th Thursday-Book Club

I hope that helps or gives you some insight!

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