You do it from your Pm inbox.
At the top where it says Good Evening....
Click the link (the text XX messages).
In the inbox theres a small side panel to the left with "Edit profile"
Not exactly logical 
You do it from your Pm inbox.
At the top where it says Good Evening....
Click the link (the text XX messages).
In the inbox theres a small side panel to the left with "Edit profile"
Not exactly logical