ActivityForum is scaleable, it works for groups or associations of any size.
From a single club of some 100 members to an organisation that has a country wide membership based on a central office cascading down to Sub Groups in counties and towns.
Or an organisation that has members all over the country with groups in regions and others which have specific interests.
ActivityForum will spread the administration load away from the centre to the regions and groups.
Scale-free structures are ideal for systems that support formal organisations that vary in size from small to large numbers of participants. These organisations are not often commercial in nature, and those that are not commercial are often funded by their volunteers annual subscriptions or in some cases from public funds.
Not only does this method engage with your membership at a much more local level, you can normally encourage these members to support you with some voluntary effort.