i have a member who pay's 2 single memberships and one double membership 1 single is 6th of month 1 single is 9 of month 1 double is 18 of month so to save me some time and to make it neater, i wanted to change the 3 payments to 1 can it be done? cancel them all or change the dates somehow? or can i make a new invoice, remove others, he pays on date and sets up auto payment?