What are they?
First Few Clicks is an advanced feature and is not required. It can be used to boost bids for an initial "burn-in" few clicks to help establish your Ad Set's Facebook relevance score. These take precedence over the Bid Change rules. Be sure you have set Bid Change rules to take over when the “First Few Clicks” are complete.
In the example below, you will bid $2.55 for the first 10 clicks and then drop to $2.02 (see Bid Rules 2nd graphic), depending on performance.
Shown for example only - not part of First Few Clicks