You'll need to put some definitions around what is an outlier and what is not. If you did that, you could easily create a calculated field that acts as a filter.
I recommend you creste with calculations different conditions with IF, in order to create new categories and determinate how tableau desktop use these categories as filters.
could you please upload a set of data to help you better?
it's a suggestion in prep, just like how prep could exclude null value.
as i am analyzing membership data:
around 5% of member buy with out of normal high amount
another 5% of member buy with out of normal high frequency
I could exclude them in tableau desktop, but it would be great if there are a button to exclude them,
easier than creating a box plot to locate below Q1 and over Q3 data