Contacting individual sellers

Site URL: http://www.cobbledstreetshop.co.uk

Hi, 

my website is based on individuals sending me their work to publish my commerce that people can then buy their work. When customers purchase their items, how do I send a purchase order to the relevant sellers when their work gets purchased e.g. a customer could buy a candle and print but both products are supplied by different sellers? 

Thanks

any ideas please?

I don't think Squarespace has such a feature. You would use some separate mechanism to pay your sellers.