OBI typically displays the names of the individual dashboards across the top of the screen. Unless we create more than 15 dashboards, it would not show it in a drop-down menu. That is the default dashboards required before they turn out to a menu.
Here we can group the dashboards that were built based out of same subject areas and show a drop down menu as follows:
In order to do that, we need to create dashboards by using the same shared folder and change the instanceconfig.xml file parameter as follows.
So if you have more than 2 dashboards then all the dashboards which comes from the same shared folder will be displayed as menu. And this entry takes effect for all the shared folders.