According to the list of supported cameras, it was added in Lightroom 5.7.
However, I have seen discussions that the conversion needs to be improved. I can't give you any more detail. You might do a forum search and see what information you can find.
The camera was available in Sept 2014 and the LR 5.7 in Nov 2014 first supported it. LR 5.7.1 was released in Dec 2014 and continues to support it.
If you are actually using LR 5.7 then please describe the details of what leads you to say that LR 5.7 doesn't support the X100T.
The question was marked "answered" several hours before your post. Thanks. RW
It isn't answered though. You're using a version of Lr that should support the camera, but - you say - doesn't.
So can you use it with Lr 5.7 or not? Other people using the forum might benefit from this thread too, remember.
Or when you wrote "teach" did you mean "tether"? Because Lr doesn't tether to Fuji cameras.