I am working on a large scale project and there are different hourly rates applicable to the different project components.  The rates in this case are dependent on the work and not the individual completing the work so I am wondering - the standard set up allows you to affix a rate to an individual user but is there a way that it can be assigned to a work package instead.  Alternatively, if I were to create a User Group and put the relevant people into that Group, could I then assign the pay rate to that group?  Or is there another way to achieve what I am trying to do?