We have a gridview table with a column that has four MySQL ENUM values. The user can see all four values in the column search box as a drop-down list and they can choose any single value to search the gridview data. This is shown in the screenshot in the first column named “Billing Status”. I would like the user to be able to select one or more of the values to search. A mockup of this is shown in the second “Billing Status” column. Is this a feature built in to Yii 1.x that allows a column of the gridview to have multiple items selected? Can anyone point me in the right direction? Thank you.