In Instant Digital Signage's Manage screen, you can now set playlist items to play a set custom amount of time.

This would help you if you had a long list of content in the playlist but you want to play certain content at a higher ratio than the rest of the content, for instance if you had specials in the playlist.

In the example below, we've created a child playlist by selecting the Playlist button and selecting Add child playlist:
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Now we can add several pieces of content to that child playlist and adjust the child playlist options:

You can now set custom playlist options on either individual items int he playlist, or child playlists in the playlist: