Here you define if the cut in should be included in all (also future episodes) or only in episodes with release date up to a certain date, which you can select.
By default "unlimited" is preselected. This means that your Cut In will also be played in future episodes as long as the previously defined end date (duration of integration) or the impression target have not yet been reached.
Your Cut In should only be included in episodes that were released between January and March 2022. Accordingly, you select 01.01.2022 as the "Publ. date of the first episode" and 31.03.2022 as the "Publ. date of the last episode". All episodes that were released before or after this date will therefore not contain a Cut In.