We are looking to move our electric organ up into the choir loft, where all of our other music equipment already lives and plugs into a sound board. The priest is on board, and I have people ready to help move it — I’m just stuck on the audio/output side of things, since I’m not very knowledgeable in that area.

I’m realizing I don’t even know how to properly describe the organ’s output system, so I’m hoping for some guidance on what I should be looking for and how this typically works.

Here’s what I’m trying to figure out:
What are the common output types on electric organs? What should I look for to know what type it is?
How can I tell whether the organ has:
a line-level output that can go straight into a mixer?
or if it’s designed to power its own speakers, meaning we’d need a DI box or some other solution?

If the organ currently has built-in speakers, is it common/safe to:
bypass them? How to do that??
or run the signal to the sound board in addition to them? How to do that??

Everything else in the loft (keyboard, mics, etc.) already runs into the sound board, so ideally we’d like the organ to do the same. I’m very happy to report back with photos, model numbers, or details once I know what to look for.

Our dream scenario would be to have this ready for Midnight Mass, but I want to make sure we do it correctly and safely.
Any advice whatsoever — even “start by checking ___ on the back panel” — would be deeply appreciated. Thank you all so much in advance!