I have a shared mailbox in addition to my private mailbox.
When receiving email, my emails go to separate INBOX - one inbox for my private emails and one for my shared mailbox.
When I send an email from the SHARED MAILBOX my outgoing email showing up in my private email "sent items" instead of showing separately in my shared mailbox "sent items".
I don't want my "sent items" to mix between my private email and shared email.
How could I solve this issue?

Thank you.