At this time, it is not possible to be an anonymous Member within a Community Product without also making the name anonymous to the account owner.
For example, your Member can manually change their name to "Anonymous" in the People section, however that will also make it so their name is Anonymous everywhere else - emails, People tab, etc.
If your member would like to change their name to "Anonymous":
- First, they must log into their account.
- From their account, they can click their Avatar in the top right corner of the page.
- Then, select Settings.
- In their Account Settings, your Member can edit their Name and additional information: