Happy to help here. I own a company that has been streaming for house of worship since 2008. One quick note: I'd opt for the 4K version of the ATEM and anything else you purchase. HD is on it's way out and since you're building a new worship center you'll have a good head start on equipment, budget notwithstanding.
Our goal is to have Propresenter send to two projectors and separately to the church TV's. The presentation computer will control the slides and songs.
UPGRADE to Pro Presenter 7. The new version has a redesign that allows you to setup the song lyrics once, then reformat for multiple screen types and simultaneously distribute them, keeping all slides in sync. For instance, in the worship center you can have your text centered on big screens and a large font. Then you create a different "screen" for lower thirds for your broadcast. Create another "screen" for stage displays. And finally, you can run announcement slides to the hallway TVs, all from simultaneously from one machine, one playlist, one song file and everything stays in sync. There is a great video on renewedvision that explains this feature.
Now on to the YOUTUBE question:
We also want to stream to youtube while recording and we don't know what we need.
1. You'll need a way to come from your ATEM to a computer (I prefer Macs). Web Presenter from Blackmagic is fine but it only streams at 720p. I would consider either an UltraStudio Mini Recorder ($145) as it will act as a 1080p source from your ATEM.
The Pros:
[*]Cheap
[*]Easy way to get video into a machine and appear as a "webcam" for your streaming software
The Cons:
[*]Only a single SDI input and HDMI input
[*]Requires a Thunderbolt port (uncommon except on older Macs)
I would STRONGLY consider the UltraStudio Mini 4K ($995) because you get a great selection of I/O options, albeit a much higher cost.
The Pros:
[*]I/O includes HDMI, SDI, LOOP, Analog Audio (TRS), and more
[*]You'll be 4K ready
The Cons:
[*]Cost compared to the mini recorder
[*]Will require a computer with Thunderbolt 3 (USB-C Connector type)
2. Once we get your ATEM connected to the streaming computer we need some in-between software to push the stream out. If you are only going to YouTube you can use their baked-in web interface to stream. I recommend taking a look at OBS (FREE), or WireCast.
One final note on streaming...consider sending to multiple destinations; Facebook, YouTube, Instagram, etc. as guests are becoming more segregated in the platforms they adopt. This can be a little more involved on setting up. Message me for more info on that.
On this question:
The other thing is to have a multi-view in general and then have another monitor for another video crew member to control another camera separately from the main switcher.
My advice is to get the Smart Video Hub from Blackmagic. It's basically a 12x12 video switcher on steroids. You can connect all of your cameras directly to the hub BEFORE you connect to the ATEM. From the hub to the ATEM inputs. You could also connect all of your ATEM outputs to the hub and connect your cameras directly to your ATEM. Either way works. What using the hub will allow to do is route a direct feed from a particular camera to a monitor (connected to a hub output) for your camera person. Note that 1 source can feed multiple destinations so you can also route that same camera back to your ATEM. Additionally, you can route the multi view output of you ATEM anywhere also if it is also connected to your hub. This gives you incredible flexibility. I just installed this particular setup in a church in Florida.
I was a media pastor for a decade, I feel your pain in recruiting people to run cameras. However, if you go full PTZ you're limiting the potential for those needs to be filled, IMHO. What I learned was that personal invitations to help were much more effective than an all-call to help on the media team. Go to specific people, let them know you are going to guide them every step of the way. My new recruit training paradigm was:
[*]Week 1: Observing several positions to help narrow down where they feel they fit best
[*]Week 2: Training during a live service, standing side by side with one of our vets
[*]Week 3: Recruit runs 80% of a service while a vet is side by side walking them thru every step
[*]Week 4: Recruit runs 100% of a service while a vet observes, only intervening to save from catastrophe
Most folks are afraid they will make a mistake or break something. Let them break something. Let them screw up. Most importantly, use your people to train other people. Help your team multiply themselves by asking weekly, "Who are you training to take your position?" Finally, give everyone time off...even those that don't ask for it. Leadership is most effective when we look out for others that may not be looking out for themselves. Force your people into a rotation. They need a corporate worship experience like everyone else, wether they know it or not.
All the best, friend.