Hi Mary,

This can be achieved by adding some client side script on load of new task screen. If you have a closer look you will observe, when user clicks on the Show Campaigns button, &showcamp=y gets added to the new task screen URL. Hence you just need to prepare the URL such that &showcamp=y will gets added to the task URL and finally redirecting the screen.

Hope this helps!

Sincerely,
Dinesh

Thanks Dinesh :), that's work with a little tweak from our service team.