AME Watch Folders - Image Sequence Transcode

Howdy,

I'm receiving content as image sequences, and transcoding to a video format.

I have been unsuccessful in using Watch Folders to perform this task. As soon as sequences begin transferring to the watch folder, AME begins encoding each image as individual videos. 

Is there a way to flag a watch folder as containing image sequences? I would expect that after 5 minutes of inactivity the transcode would start. 

Any advice would be hugely appreciated.