Targetable YouTube Select Lineups for the ad product and the default Lineup.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/services/reach_plan_service.proto)

| Fields ||
|---|---|
| ## `default_youtube_select_lineup` | `https://developers.google.com/google-ads/api/reference/rpc/v26/YouTubeSelectLineUp` The default YouTube Select Lineup for the ad product if available. |
| ## `youtube_select_lineups[]` | `https://developers.google.com/google-ads/api/reference/rpc/v26/YouTubeSelectLineUp` Targetable YouTube Select Lineups for the ad product. |