If you are referring to the main control monitor then technically no. But the larger the screen the better should be considered as it gives you more screen real estate to see what is going on. It allows you to spread things out so you can see all of the different areas easily. At our Church we are using a 24" 1080p monitor and I find that restricting to some extent, especially if the Worship Team goes off script during a song. I'm looking to replace that monitor with an Ultra Wide or a 1440p monitor once we complete our sound system upgrade.
We have a new Dell desktop computer for our
Easy Worship program. Does it matter what type of monitor we purchase?