Second answer also works on arrays of array

http://stackoverflow.com/questions/9960908/permutations-in-javascript

Methods for getting attention from large groups

Google search: how to get the attention of a large group
http://www.nuffieldfoundation.org/science-society/gaining-attention-large-group
http://www.ultimatecampresource.com/site/camp-activity/large-group-attention-getters.html
http://appliedimprov.ning.com/forum/topics/1503280:Topic:16633
http://www.experientialtools.com/2012/03/16/large-group-facilitation-tips/
http://www.edutopia.org/groups/classroom-management/737576
http://www.kellybear.com/TeacherArticles/TeacherTip54.html

Future consideration - e bicycle

https://www.faradaybikes.com/features/#a-better-bicycle

Tutorial on how to setup a WordPress based site

https://www.smashingmagazine.com/2016/02/beginners-guide-creating-wordpress-website/ Could come in handy.

Helpful example showing how to conditionally format using a formula

https://support.office.com/en-us/article/Use-a-formula-to-apply-conditional-formatting-FED60DFA-1D3F-4E13-9ECB-F1951FF89D7F

Even better link showing how to do ANDs and the like:
https://support.office.com/en-us/article/Create-conditional-formulas-to-find-data-or-apply-formatting-5CDFB6A3-75FF-48C3-B11F-C15F9563722D