I have a 53 plate toyota aygo and would like to know how to drain/change the gearbox oil and refill with new stuff. Is there a cap for this, how do I go about doing this?

Hi,
Its not a rocket science dear.
Remove transmission oil pan (or plug if equipped) to allow transmission to drain.
And refill it with a new one.
As i said, it is too easy.......

Its easy..but do it carefully, while changing the oil..

Is there a cap for this, how do I go about doing this?