Creating a Multiple Value Selection Parameter Parameter created in regular way allows to select only one value at a time but in order to create multi select parameter, Tableau has given the below Options according to their tech note: Option 1: Using Set Controls Starting in Tableau Desktop 2020.2 Set Controls allow end users to change the values in a set. This example allows the users to select two sets of states to see on one map, but sets are flexible and can be used in many scenarios. Right-click [State] in the left-hand data pane and Create > Set… In the Create Set dialog, give the set a name and click OK. In this example, the set is called "State Set A" Right-click [State Set A] in the data pane and check Show Set Repeat steps 1-3 to for "State Set B" Select Analysis > Create Calculated Field the Calculated Field dialog box that opens, do the following, and then click OK: Name the calculated field. In this example, the calculated field is named "Sel