If you use chapters markers when working with Adobe Premiere Pro, you can easily import them to your uploaded videos. 

• Open your finished Premiere Pro project, with added chapter markers.
• Click on File > Export > Markers...
• Export in .csv format

Importing Chapters on VidFlow

• Open your gallery project, and click on the video.
• This will open the video details window. Click on the Advanced tab to access Chapters.
• In the Chapters panel, click on Import > Premiere Pro Markers (.csv)

• Select the .csv file you exported from Premiere Pro
• Your chapters will then be added to the video. You can make further adjustments to the chapter titles and timecode, if needed.