Filter your data by selecting a column and entering a comparison value to match against using an operation like Equals, Contains or In Range. To filter on multiple columns and/or multiple comparison values create an advanced Function that returns a boolean (true or false) value.
In Explore mode, right-click on a value in a column and select one of the options Keep or Remove to show or exclude all rows containing the chosen value.
The Split Workflow step is the same as Filter but has the benefit of two outputs to see the rows that pass the filter and the rows that fail the filter.