I was wondering if the Share Spell allows one to have 2 emanations of Conjure Woodland Beings, 1 on the ranger and 1 on the beast, and if it does is the beast now concentrating on the one affecting it? Finally, if there are 2 emanations overlapping a creature does it protc twice in 1 turn since 1 is from the ranger and 1 is from the beast. or does it depend on what the dm decides since it does seem like a grey area

Level 15: Share Spells

When you cast a spell targeting yourself, you can also affect your Primal Companion beast with the spell if the beast is within 30 feet of you.

Conjure Woodland Beings
Casting Time: Action
Range: Self
Components: V S
Duration: Concentration, up to 10 minutes
Classes: Druid, Ranger
You conjure nature spirits that flit around you in a 10-foot Emanation for the duration. Whenever the Emanation enters the space of a creature you can see and whenever a creature you can see enters the Emanation or ends its turn there, you can force that creature to make a Wisdom saving throw. The creature takes 5d8 Force damage on a failed save or half as much damage on a successful one. A creature makes this save only once per turn. In addition, you can take the Disengage action as a Bonus Action for the spell's duration.
At Higher Levels: Using a Higher-Level Spell Slot. The damage increases by 1d8 for each spell slot level above 4.

I don't see why that wouldn't work, though I will say that different people have very different ideas about what the "target" of a spell is and what counts as "targeting" yourself, and it's been a source of a lot of heated debate. I'd be happy to allow it, but I don't think everyone necessarily would.

There's a general rule for spellcasting that the effects of the same spell cast twice don't combine. Due to that principle, I don't think a creature would be affected twice if they were in the area of two different Conjure Woodland Beings emanations at the same time. However, I do think it would be possible for a creature to take damage from more than one of them on the same turn if they moved into one, out of it, and then into the other on that turn.

Nice idea. I'd say only you concentrate for both effects.

Quote from Estaln >>

Nice idea. I'd say only you concentrate for both effects.

Since it's still just one spell being cast, if you lose concentration on it, both Emanations would go away.