Pop the cap out with a flat pry tool.

Loosen the T15 screw. You don't need to remove it.

Pry on both sides of the turntable so that it comes up and out.

To reinstall it, make sure the motor-facing side goes in first, to make good contact with the stepper motor gear teeth.

If the stepper motor-facing side does not get reinstalled first, the table will not sit properly.