To apply for the practical test for an FAA MEL license you must have:
- Met requirements for SEL or hold SEL license
- Completed flight training to the satisfaction of an MEI (FAA multi engine examiner)
- Received a practical test sign-off from that MEI to say you are prepared to take and pass the practical test.
The practical test itself is about 1.5 hours and there is an oral exam before the test which takes about an hour (although there is no written exam).
If you want to try a twin or build some hours after you've passed then drop me a line - I have an Aztec in London and happy to let you fly (with me) and log P1.