Click Generate Assignments on the Project Tasks related list of the project detail page that you are generating assignments for. Project tasks must have one or more project task assignments. Or, on Project Task Gantt, click Create Resource Demand and then Create Assignments.
Select some attributes to base the generated assignments on. You can only select Milestone together with Role, Resource, or External Resource. Custom attributes may be available to select if configured by your administrator.
Optionally, in the Longest Gap Allowed (Days) field, enter the duration of the longest gap, including weekends, permitted between consecutive project task assignments before a single assignment is divided into two. To ignore weekends when calculating gap duration, select Ignore Saturdays or Ignore Sundays.
Click Preview Assignments.
Preview the assignments, including scheduled hours, cost rate, bill rate, duration, and the proposed resource to be assigned.
Deselect any previewed assignments that you want to discard.