Symbol with musical instrument

[Gio Bell]

Hello everyone. I am sorry if I ask a question already asked by someone else but I have looked for the answer and I have not found it. So, I understood that it is not currently possible to customize the avatar because the function is not implemented. For now the only option is the one with the symbol of the head with the headphones. However, I am interested in the other small circle, the one in which the symbol of the instrument should appear. Many people (me too) have only the symbol of the musical note and the word "other" and this makes it difficult to identify immediately if in a session there is already the instrument that you play (in my case the drums) and therefore it is useless to try to to come in. How do you make the musical instrument symbol appear? If I go to my personal profile I see the circle with drums symbol but in the session section you can see the generic one. Thanks and sorry again if the answer has already been given.