The Auto Advance function in Presenter instructs a cue to go to another specified cue without any manual operator input. In order to set Auto Advance, the cue cannot contain a Lyric or Scripture Foreground. Eligible cues can be set to auto-advance after a set amount of seconds or, if you're using a video as the Background, when the video is done playing. You'll find the Auto Advance setting on the bottom left side of the cue editor, under Advanced Cue Options.
Once Auto Advance is turned on for a cue, you'll see a clock icon to the left of the cue name in the left cue list pane. When you click on a cue and start projecting, you'll see a countdown timer at the very top of the cue list panel indicating how much time is left before it will move on to the next cue. Both of these are illustrated in the screenshot below.
The screenshot also demonstrates how to use the Bulk Cue Editor to set Auto Advance for multiple cues at once. Again, certain cues are not eligible for Auto Advance, so you won't be able to successfully apply this function to those cues through the Bulk Cue Editor - the Bulk Cue Editor will work best for applying Auto Advance on multiple Background Cues.
For Foreground cues: Slides, PowerPoint, and Google Slides cues are eligible for Auto Advance, but you won't be able to apply Auto Advance to those cues from the Bulk Cue Editor.
To create a loop, make sure that the last cue of the loop is set to go back to the first cue of the loop. All other cues should be set to go to "Next Cue."
In the screenshot above, the first 5 slides are being set to "Next Cue." Hit Apply to save. Then, you would go and select just the 6th slide, "Volunteer Sign Ups," and have that one go to either "First Cue" or the specific "Welcome Slide." ("First Cue" refers to the very first cue in the entire cue list, so if that's not where you want to loop back to, select the correct cue under "Specific Cue.")
You can apply Auto Advance to cues with Slides, PowerPoint, or Google Slides in the Foreground. In this case, use the Auto Advance setting that appears right below the Choose Presentation box, not the Auto Advance that shows up under Advanced Cue Options. The latter Auto Advance box will display a message stating that you cannot apply Auto Advance on cues containing Foregrounds but this is in reference to Lyric and Scripture cues. The Auto Advance settings under the Choose Presentation box were added to bypass this.
Alternatively, you can make your slides in PowerPoint, Keynote, or Google Slides, and export* each slide as an individual JPEG. Then import each individual JPEG to Presenter as a separate media file/image. Once imported, set each media file as the Background of its own separate cue. The result should look like what's pictured in the screenshot above.
*PowerPoint has an option to export each slide as an image in bulk, while Google Slides requires that you export each slide one by one. So, if you're using Google Slides and you have a lot of slides, you may want to download it and open it in PowerPoint to complete the export to JPEG.