VIRTUAL PA TO CONSULTING PARTNER

One of our Consulting Partners based in Geneva and seriously busy needs occasional help!, very senior figure within Climate Change arena,travelling the world 26 days per month.
We envisage this busy period to continue for four/five months, help may include dealing with a variety of companies/people following up post conferences or meetings,re-scheduling meetings and diary control, our Chap is Dutch, speaks several languages and easy to deal with.
French speaker would be helfull, previous senior corporate experience a must,(PA to FD/MD),would be dealing with UN-UNFCCC and Global organisations, ability to read documents and comment, send e-mails and a large amount of common sense would help also must have a good sense of humour.
We think that 5 hours per week or a bit more may solve the problem, maybe a bit more, all negotiable.