Daryo Jul 31, 2017:

if you want to make it a usable term that means something and could be later searched, then your question should be:

[doing something] at someone's convenience

Florence Thierry Denison (asker) Jul 31, 2017:

I know convenience is not in the extract, i added it as a context ! but the title of the paragraph is convenience return

B D Finch Jul 31, 2017:

convenience return Your header term " convenience return" isn't English. It doesn't appear in the extract you quote; "at the customer’s convenience" means when it is convenient for the customer to do so.