Here you can find a couple of resources:
The New Group Journey will give you some ideas on how to go around to set a new group. Take it as a guide and see what can work better for you taking into account the reality of your environment, your organisation and so on.
The Sustainability Scorecard will help you evaluate your progress.
New Group Journey
This interactive tool is designed to help you think about the different steps you need to take to successfully start running a new children or youth group - from volunteers, to fundraising, publicity and planning your group's activity programme. From your first thought of “I want to set up a new group!” to making it a reality, by following each of these steps, setting up a new group doesn’t have to be daunting!
Sustainability Scorecard
This tool is a spreadsheet that can help you evaluate your progress, it has a list of items to take into account when setting up a new group and you can complete how far along have you gotten and then you can see the percentages of that into seven categories (the same ones that you had in the New group Journey!)
Copy the google spreadsheet to your drive or dowload the Microsoft Excel version or the OpenDocument version.
Edit the spreadsheet if you want to add more items to check (remember to update the formulas!)