After going nuts looking for some icons to represent these group activities, I decided to make some. These are using a stylised petal shape but the principle can be adapted into another shape. One of the 'debate' versions initially looked like two people having a punch up being egged on by the crowd. Filled in shapes indicate full participation, hollow ones are passive, half-half are contributing to the activity. If anyone wants these saved separately, just message me
Group icons free icon was designed by londonlime for icons Png and presented to its users.
londonlime
1/8/2018