calendar

I didn't managed to install
MrP 0.7 (too old libraries)
so I use 0.6 version.
Thus the following feature request
could be too old.

I wonder if it is possible
in futher versions
that we can specify
the calendar we use for each resource.
Period while we know
resources will not be available in all case
depend on resources.
For example, employee does not have
the same employment period sometimes.