We schedule all sessions as two hour appointments (with the exception being mediation appointments with attorneys present; these are generally scheduled for a half day). Like most mediators, we have found this to be an optimal length of time for couples working directly together with the mediator.
Shorter appointments simply don’t allow you to remain focused and to “get through” and resolve certain issues. With longer appointments, mediators and clients often get too fatigued to continue meaningful progress.
On occasion, particularly with parties coming from a long distance, we do schedule for longer sessions because more frequent sessions are simply not practical given the travel times involved for one or more parties.