Hi!
You didn't use any search engine?
Sorry "latex application form design" didn't give me anything as well ! Not
an excuse.. nevertheless..
Check this example (Observing Time Application Form):
http://irtfweb.ifa.hawaii.edu/observing/applicationForms.php
Proposal Submission Form:
http://www.subarutelescope.org/Observing/Proposals/Submit/form.html