Hello Matt,
You simply log into go cardless find the customer and claim the payment they do not need to authorise it once they are set up on go cardless - it will take you a few clicks enter amount and claim.
I will just say I do not know what software you use, but I have been involved with Cleaner Planner since day 1 - and of course I think its fab, HOWEVER the biggest WOW moment for me was just before launch and GC was intergrated with CP - we have over 100 customers on this method now and those few clicks and entering the amount is time consuming, on CP at the end of the day you literally click start and press enter and its done it even automatically takes it off your debt list when the payment lands in your bank this ONE feature alone was worth the monthly subscription fee for the time it saves - and that is without all the other bits and pieces - I also think Rob will be popping in an auto claim for those that want it, so then when you close your end of day it will auto take payment to save you the click and enter key
Anyways hope this helps a little
Mrs Smudger x