I don't think it's made it into any dictionaries yet, but I hear "coschedule" at conferences and around the office fairly frequently.
I believe a typical English speaker would understand this just fine, although if you're in an extremely-formal written context, you might pick another expression, since this word is still emerging in terms of recognition in general use.
Note however that it's not a new term; there's a Wikipedia entry that describes its usage in the context of computing (apparently dating back to 1982) that fits what you want just fine:
Coscheduling is the principle for concurrent systems of scheduling related processes to run... in parallel.
I will schedule the two meetings for the same time.or...
I will schedule the meetings to run in parallel