To sign up for an event, get in touch with the organiser.
Their phone numbers and emails are here.
They need 48 hours notice.
These are club organised activities which are insured and run by coaches deployed by the club's Trustees.
This is a region-wide slalom training organisation which has regular sessions throughout the year. Club members are major contributers and it's a good one to get involved with if you're into getting better at slalom. Mark is the goto person for more details but this is their website.
Some events eg club jobs and training groups are organised by WhatsApp.
Here's a list of WhatsApp groups.
Ask the admin. if you want to be included.