Ability to form "Private Group" for benchmark portfolio returns

If you could add the ability to add friends to a private group and benchmark portfolio returns 1 month, 6 month, 12 month returns by percentage would be a nice feature and would probably get more referrals for the platform.

For example:
I form a group of 5 friends, all have signed up for Accointing.
We can see where we are in the group and our relative percentage returns.
We can add more people to the group, just like a whatsapp chat group and perhaps even chat in the app.