I logged in to Splunk web URL and i see many Apps , how can i make one app as default so when i login I don't need to select my app from the list
I go it through Preference -->Default App .
My product is Enterprise and role is user
 
					
				
		
Go to Settings -> Access Controls ->  Users -> click on your username -> Select app in Default app.
This should solve your problem.
Thanks
Anantha.
