Hi,
I suppose that you're talking about accessing the affiliate payment which is created as an order in HikaShop when you click on the "pay" button of an affiliate partner.
You'll have to create a mass action via the menu System>Mass actions.
In it, you want to have a filter on the "order_type" column being equal to the value "partner".
You can also have an action "Display the results" and select the columns you want. The most important is the "order_id" column.
Once you have the order_id, you can edit another order in your backend, and change the value of the "cid" parameter in the URL (in the address bar of your browser) to the order_id of the affiliate payment order to be able to access it.