Fantome as in to be a counsellor? Have a look if your company has a procedure whereby someone can seek guidance/advice if they're feeling low. If not, find out how one can be implemented.
There's
Stiftung Mayday which I am a part of through NetJets Europe. Whilst it isn't specifically for someone going through divorce as such, it is a very good resource and may be of some use. There are other set ups similar.
Other than that, there's the organisations you've mentioned. A few colleagues and friends have volunteered for the Samaritans (crisis support organisation in the UK)
The main thing is to care. Keep in touch with folks who might be feeling low, make appointments to see them or call. In other words, throw out a lifeline and let them know someone is around who won't judge, won't take sides and won't tell them to snap out of it.
Good luck.