How do i remove crown? I am trying to remove the movement from my watch so i can replace a digit

Question

I am trying to remove the movement from my watch so i can replace a digit that had come loose from the face.
So far I have removed the case back, removed the white plastic movement surround/ casing. The movement is now loose but is prevented from being taken from the case by the crown shaft/stem.
Can anyone tell me how to remove this?

Also the mineral see-through glass case back is cracked and I am trying to locate another, new or secondhand???

Thanks. Model is WAC1113 XM2356.

have all information, parts and tools to replace movement but am missing procedure for removing and replacing stem from tag-heuer tristar