Workload reporting per resource

Hi,

Again, sorry if I missed something.
- I saw some interesting reports but I would like to get the ability to see the workload of one or a bunch of resources over a specific period of time.
Is that possible (Like John workload during the month) ?
- I also would like to know if there is the possiblity to get automatic warnings when the worload of a Resource exceed 100% over a specific period of time (For instance if I use this resource on 4 tasks that requires 30% of time over 1 month, I would be at 120%)

Best regards,
Pierre Martins