Do you have a WFM product?
If so I'd suggest setting the language skills as if
it were a 'traditional' multi skilled environment, then, just
let the WFM application do the hard work for you.
Obviously this is dependant on having:
a) The historical data available, BY LANGUAGE, to
properly configure the model
b) Enough staff to cover the outcome!
Can't think of an easier way to do it I'm afraid, manually is
going to be nigh on impossible.
Another thing to bear in mind, are you working internationally?
If so you may need to offset language skills against the
time zone(s) of the predominant demand, ie: Arabic/ Middle Eastern
'core' business hours are approx 5hrs ahead of the UK, so that's
3am- 1pm in the UK. Turkish would be 2 ahead etc...
It's an interesting question, can you let us know how you get on?