So one of my party has been enslaved by an Aboleth, however the party has a Twilight Domain Cleric which comes with Twilight Sanctuary
You can use your Channel Divinity to refresh your allies with soothing twilight.
As an action, you present your holy symbol, and a sphere of twilight emanates from you. The sphere is centered on you, has a 30-foot radius, and is filled with dim light. The sphere moves with you, and it lasts for 1 minute or until you are incapacitated or die. Whenever a creature (including you) ends its turn in the sphere, you can grant that creature one of these benefits:
You grant it temporary hit points equal to 1d6 plus your cleric level. You end one effect on it causing it to be charmed or frightened.
Now my question is in 2 parts
Would Twilight Sanctuary auto end the Aboleth Enslave condition (which is a charm effect) or does the Cleric have to state which condition they are removing?
The Character who is enslaved has no idea what Twilight Sanctuary does (this is the first time the cleric will have used it) and as a result can't "avoid" it to stop being un enslaved as per the Aboleths command so to my mind the player is ok to allow the character to be in the sanctuary as long as they don;t know what it will do.
As far as RAW goes how would you rule this?