Instantiate Object at another Object

If I had any hair Id be pulling it by now, but this one has me stumped
How do I instantiate an object at another object.
To be clearer I have a trigger at position A and once activated I want an object to be created/instantiated at position B ?
I can get triggers to work for other stuff like sound effects or to destroying objects.
The closest Ive got so far just kept instantiating the object at the players location and not at position B.

Any help would be appreciated guys?