Hi,
After you are done with the settings niketnilay suggested, you can also depend your panel on the input you give by changing your search settings
ui > edit > edit search(click on small search icon) > Time Range > shared time picker
... View more
You may want to also make sure you copy $SPLUNKHOME/etc/users -- this will bring in dashboards and settings that are defined with user scope.
Regarding indexes - you may not want to bring the splunk internal indexes - and only the ones with your onboarded data (assuming you don't want the internal indexes)
... View more