If an it_project_manager does not want to equally distribute hours across the resource plan time...

If an it_project_manager does not want to equally distribute hours across the resource plan time frame, the allocation spread should be set to Any. This option allows the it_project_manager to manually enter the hours for each month or quarter in the resource plan. The other options (Even, Back Load, and Front Load) automatically distribute the hours evenly, from the end, or from the start of the time frame, respectively. You can find more information about the allocation spread in the Product Documentation for ServiceNow.