Selecting multiple values in drop down filter

Suite and Optimus Suite 5
#1

I want to able select multiple values in dropdown filter for a column.

in example in dhtmlx.com/docs/products/dhtmlxGrid/, for the author column, i want to filter to see all books by John Grisham and Stephen King.
Right now, I can filter by only one author. How to filter for multiple choices?

#2

It not possible to do with default grid filters. But you can create any custom filter you need using filterBy() method and custom content in the header