the course should now have at least two flights - see Standards Document 21.
That's what I believed untill I read the AMC!
AMC1 FCL.1015
(b) The course should last:
(1) for the FE and FIE, at least 1 day, divided into theoretical and practical training;
(2) for other examiners, at least 3 days, divided into theoretical training (1 day) and practical training in an FFS conducting role played proficiency checks and skill tests (at least 2 days).
Then under CONTENT it says:
(5) For an initial examiner certificate, practical training should include the examination of the test profile sought, consisting of the conduct of at least two test or check profiles in the role of examiner (these two tests or checks profiles can be performed in the same simulator session),
This appears to relate to "other examiners" not the FE(PPL).