Legato or choppy: practice some finger substitution. It takes practice and makes a big difference.

• Imagine if the organist played everything as staccato -- that would be extreme and sound bad, right? That happens easily to pianists moving to the organ.
• You don't want it to be choppy, but smooth (except when it sounds bad to be smooth, of course).
• An example: if we use one hand to play a C then higher G then higher E, it could be hard to make it legato, UNLESS...
• But this idea applies to many things we play. Listening carefully (maybe recording yourself) can tell you.
• (We could try it together with a hymn? Demonstrate both the wrong/right way?...)
• There are probably some good organ-specific exercises, like for finger substitution, available. Maybe free, or from BYU, Church site etc. I might have some..?
• (We don't necessarily want dissonance either. I.e., like holding down the piano sustain pedal *all* the time -- that wouldn't sound good, right?)