Include "select all" in a scroll down menu in a custom form.

[MiguelGa]

We have custom forms that have scroll dow menus and we like to add the option "select all" in the scroll down menu , similar to scroll down menus in Excel. Is there a way to include this slection in a scroll down menu in a custom form?

[RandyRoberts · Accepted solution]

Do you mean a check-box dropdown? If so, there is a select all for that type.

[MiguelGa]

what I meant to say was to include in the dropdown menu "select all" when applicable

[MiguelGa]

where would be the "select all" chweck-box for a dropdown?