Unable to Filter Dashboard Without Filtering Underlying Worksheets

When you apply filter actions or quick filter selections on a dashboard, the underlying worksheets are also filtered.

Tableau Desktop

To filter the dashboard without filtering the worksheets on the dashboard, use the following workaround:

For each worksheet used in the dashboard, right-click the worksheet tab, and then select Duplicate Sheet.
In the duplicated worksheets, on the Filters shelf, remove all filter actions. Filter actions begin with the word Action.
On the Filters shelf, right-click all fields, and then select Apply to Worksheets > Only This Worksheet.

When you make filter selections on the dashboard, the newly created worksheets will not be affected.