2) Leadership - both inspiring and practical

3) Governance structure

4) You need to get something out of it!

5) functional - using easy communication tools (not slack :-))

2) Common goals/interests

3) Clear guidelines/strategy

4) Governance structure - distribution of responsabilities

5) Defining tools for mantaining the network - meetings, practical tools, documents repositories, ...

Individual needs to feel like he/she can contribute to the group & is nurtured by the group

Feel like the group is achieving something

Optimal group structure