How to Filter multiple departments in Gantt Chart

[ramil]

Hello Vittal,
There is a discussion with all the details in the following topic:

Custom filter within gantt grid columns

Hello Vittal, I need this kind of filter in the header column of the grid Do you use a third-party library to show that filter? Please, add it to the snippet and show it on the page so that I can see how it works and put it inside the grid header. Above example is not working Sorry, I forgot to add the information, that you need to add the year range first, then you can use the multiselect element, and both filters will be applied:

Please, add your response there.