When you need to provide an overview of the content of your presentation for approval by responsible persons, you can create a presentation outline. This presentation outline is a document in which you indicate the objective of your presentation and the agenda / topics to discuss to reach this objective.
By means of the outline including sample of key slides that you intend to use, you can provide an easy to follow overview of the sequence / matters discussed in your presentation.
The presentation outline is like a summarized, written, elevator pitch of your presentation that enables those responsible to have a quick overview to approve your presentation.