Thanks - I was able to take that dialog window out of my project pretty easily. Not sure what version of LabVIEW you're using, so I saved it back for 2013 just in case.
The one dialog window is effectively two clusters stacked on top of each other. First I make the selection cluster visible, then when a user selects which option they want, I hide that cluster and the Name and Apply buttons are visible beneath it.
Happy to answer any questions you've got on it.
Add New Specification.vi