Multiple values selection in parameter/ multiselect parameter

Version 1

    You can only select a single value from a list parameter and Multi-select Parameters has been on the Tableau wishlist for a long time.

    You can do this by using the tableau extension. Russell Goldin has created a single select check box parameter and with a bit modification in his extension, multiselect parameter can be acheived.

    Please vote this pull request for multi select parameter.