Invite Your Circle
The people you invite to your group should be similar in life stage or have gone through a common major life event to prompt conversations based on commonality. It is unlikely someone in their 20s will have the same financial concerns as someone in their early 40s, and we recognize those differences and embrace them in conversation.
So invite people to your Circle who you think will be engaged in discussion, benefit from hearing what others have to say and fit within your Circle life stage.