How do you change oil seal on a peugeot 206 automatic gearbox?

To change the oil seal on a Peugeot 206 automatic gearbox, first, ensure the vehicle is securely lifted and supported. Drain the gearbox oil, then remove the drive shaft or any components obstructing access to the oil seal. Carefully pry out the old seal using a suitable tool, clean the sealing surface, and then install the new seal, ensuring it's seated properly. Finally, reassemble any components, refill the gearbox with oil, and check for leaks.