You choose a point within range a 30ft sphere of detectability is created centered on that point.creatures within the sphere become easy to sense having disadvantage on stealth checks while they remain in the sphere.As an action ,while this spell is active choose 2 creatures within the sphere to either give the benifits of the disengage action or, have the next attack against them have advantage.

at higher levels 

when you cast this spell at 3rd level or higher the affected area increases by 15ft and you can target an additional creature with the special action.