A New Neighborhood
Two people move into the same neighborhood, but they don't know each other. They practice ProxAwareness by visiting local shops and cafes, seeing who is there, how they look and interact, what is offered for sale, etc.
They introduce related elements by mentioning to people that they are new to the neighborhood. By chance they meet each other this way, and decide to get together every week or so (more proximate) to compare impressions of their new neighborhood.
Doing so, they discover they have each met some people who could help the other, so they swap their friend's phone numbers (create links). They decide to have a few parties to introduce their new friends to each other (group).
In time, new friendships are formed at the parties, and the two neighborhood newcomers see less of each other (ungroup).