As course coordinator, select "parm" on the remote to set course
parameters.  You can display parameters for the entire course (top-level
map) or just select the enclosing map.  After the parameters display,
you can choose to set parameters, due dates for example, on three
levels:
        1.)  Entire course - everything in the top-level sequence (click on the
bar "__" in any of the problems under "Course" heading.)
        2.)  Enclosing map (click on the bar "__" in one of the problems in the
enclosing map under "Enclosing Map" heading.)
        3.)  One particular resource (click on the bar "__" in the particular
problem you want to set parameters for under "Resource" heading.)

I may have the heading wrong because I wasn't looking at the parm window
while writing this, but you should be able to figure it out.

Note that the last heading says something like "parameter in effect". 
Under this heading is the actual parameter being used.  Resource
parameters override enclosing map parameters which override course
parameters.