Can you set the Poster generation in a Photo library to always choose the first image in a folder?

server-windows

#1

For example, if I have a portfolio which is made up of images, contained in a folder. If I copy this into a Photo library, this will generate the poster randomly with one of the images contained within the folder.
Is it possible to set Plex to use the first image in a folder, which for this example would be a cover photo?