Resource management is the proactive approach of managing resources on a project i.e. human and other project resources. The project manager will need to make sure resources are managed efficiently and will need to consider things like the availability of the resources i.e. when people are available to work. Also, if there are any limitations in undertaking project activities for example, if making upgrades to a live IT system when is the window of opportunity to make the upgrades without affecting the users. This could be done overnight.