Increase the size of your Section by 10%
This may be by creating posters and leaflets, recruitment (open) night, bring a friend night.
Interaction with primary's 4-6
Bring a friend request.
Open night invitations.
Take the number of members in your junior section at the start of the term. Divide this number by 10 and try to recruit that many members to the closest 1.
I.e. You have 16 children, 16 divided by 10 = 1.6. To finish this challenge you must recruit 2 new members.