After you've uploaded your video, you can begin to sync your slide by following these directions.
Step 1: Open up your Powerpoint file
Step 2: File --> Export.
Step 3: Select JPEG as File Format.
Step 4: Select "Save Every Slide"
Step 5: Select "SAVE"
Step 6: It will now export a folder containing JPEG files of all the slides.
Step 7: Select all of the JPEG files and Compress it, turning it into a ZIP file.
Step 8: Navigate to the Video module, underneath the Video Upload
Step 9: Select "UPLOAD" and select the ZIP file.
Step 10: Select "SAVE"
Step 11: All the slides should now be uploaded.
Step 12: Select "Timing Editor"
Step 13: The slides are located on the bottom. The video is on the left. The SLIDE-SYNC is located on the right.
Step 14: Click Play on the video and Pause at the moment you want the slide to be in.
Step 15: Once the video is PAUSED. Drag the slide from the bottom to the right side of the window in the "drop folder icon".
Step 16: Repeat "Step 15" for the remaining of the video and slides.
Step 17: Click "OK" once completed.
Follow this video:
Step 18: Click "SAVE" on the huddle publisher to save.