I'm trying to create a new Custom List Button which can redirect to a visual force page. The problem I'm facing is that the "Content" selector at the bottom of the "Custom Button Edit" page. There is nothing to select and cannot link it to the visual force page which we want to launch from the new button.
Just as some more project FYI, we are attempting to create a custom visual force page to mimic a task page so that we can control available tasks based on the lead/contact status.
How can I populate this