This activity is used to define crew resources required to perform a specific work task on Work
Task/Resources tab Demands section. One or more skill demands can be stated on a task.
You can define a Crew Demand Type by defining only the Crew Group and later assign a suitable
Resource for it. If there is a definite Resource needed to perform the work, it
can be defined along with the Crew Group.
A Sales part site and Sales part can be added on the demand line if the price
needs to be invoiced to the customer.
As a result of this activity, demand lines with Demand Type Crew will be connected to the task.