If you are planning an Internship Registration System for PMNH students in BSD, ESD and ZSD, I recommend making the rules simple, transparent and division-specific.

PMNH has three scientific divisions—Botanical Sciences Division (BSD), Earth Sciences Division (ESD), and Zoological Sciences Division (ZSD)—which cover plants, earth-science collections, and animals respectively. PMNH has also historically provided internships to university students, including Geology students at ESD and students working on plant preservation at BSD