Multiple selection Drop Down with "Add New" button

Hi,
I have a DataGrid, and one of the columns is a chips multiple selection drop down.
I want the user to be able to add a new entry to the drop down data.
I was thinking to add a buttom at the button, like the one we have in "DatePicker with footer template".
But adding a FooterTemplate doesn't work.

Hi @Narges_Farazan,

Indeed RadzenDropDown does not have a footer so there is no FooterTemplate available.