Logo in Navigation bar

Hello everyone.
My question is about inserting a logo into the navigation bar.
Under system settings in suitecrm there is the possibility of adding a logo but i noticed that the logo is not shown in the navigation bar. This is a picture of what i mean by navigation bar
Screenshot (144)
If the logo added under the system settings in suitecrm is not shown anywhere , what’s the use of that logo and how can i add the logo to the navigation bar ?
Thanks in advance

That thing is called the “favicon”, there are threads here in these forums about that.