An entry point is the target URL of an ad campaign for the chosen app. That means the page to which the user will be redirected after clicking on the advertisement.
An app can have multiple entry points: app store pages, landing, and any inside page. The first entry point you specify when adding an application, the next one you can add at any time on the Entry points tab of your app.
Make a list of entry points, so you can select a target link from a ready-made list of URLs when creating your ad campaigns and not waste time searching for the right link.
* — required fields.
You can always edit the entry point by clicking the icon on the Entry points tab. Made changes will not affect already created tracking links and ad campaigns — the used URL will remain unchanged.