As mentioned on the webinar, here are some useful weblink for those wishing to observe lunar or asteroidal occultations.
UK occultations groups.io https://groups.io/g/UKoccultations
IOTA group https://groups.io/g/IOTAoccultations
IOTA https://occultations.org/
IOTA-ES https://iota-es.de/
ESOP xxxix presentations https://esop39.iota-es.de/seiten/programm.php
CORA (Collaborative Occultation Research on Asteroids): https://astro.kretlow.de/simda/
Asteroid Occultation Updates http://www.asteroidoccultations.com/
OccultWatcher software http://www.occultwatcher.net
Many thanks to Tim for his presentation and for providing these links.
Callum