LinkClicky works with many affiliate systems. For a list we auto-detect, see the affiliate systems we support.
Unfortunately, there are a few that cannot, or for a custom affiliate system, you will need to add a ‘subid’ manually to a link.
Use the: [trackid]
For example, if a merchant gives you this as an affiliate link
https://somemerchant.com/?aff=123&product=abc
They document their subid variable as ‘subid’. You would then proceed to add the [trackid] like this:
https://somemerchant.com/?aff=123&product=abc&subid=[trackid]
Then select the affiliate system used, or as a last resort, select ‘Manual’ from the drop-down list.