The “rid” query parameter in the link determines the region. E.g. for Ipswich region the region id is 5, so the link becomes https://register.billysbuddies.com.au/secure/registration/list?pa=billysbuddies&back=https://www.billysbuddies.com.au&rid=5 LITTLE MA : https://classhub.com.au/secure/registration/list?pa=littlema&back=https://www.littlema.com.au&rid=0 use vid=0 to display by venue https://classhub.com.au/secure/registration/list?pa=littlema&back=https://www.littlema.com.au..