For requirement 1.
you have to change in Dashboard action
clearing the selection will-select-Exclude all values
2. Achieve 2nd requirement,
You have to use parameter.
can you share some inputs about what will be there on EAST dashboard ?
and you are using filter for region east it is easy to achieve you have to add filter in action.
then there is work around for it.
I have created blank sheet for 'East'
and applied a Action filter on it, click on EAST it will take you to East dashboard
check attached workbook
Hope that Helps
Action filters.twbx 27.2 KB