If you don’t want to level, you can try other ways to resolve overallocations.
- Replace one resource with another who is available to work at that time.
- Replace more skilled resources on critical tasks early in the project. A more skilled resource is likely to get the same job done in less time.
- Change a task link so that some tasks start at the same time.
- Spread the workload out by Increase the duration of tasks with overallocated resources.
- Reduce workload by reducing the amount of work required for completing the task.
- Change the working hours of resources to shorten the duration of tasks.
- Reduce the duration of tasks, especially critical tasks that directly impact the project end date.
- Check that resources are not working during non-working time. If a resource is working during non-working hours, Project will show them as overallocated.

For detailed information about Resource Overallocation, see the Resource Overallocation Online Help Article.

A resource overallocation can be caused by a resource assigned to work full-time on more than one task at the same time, increased duration of tasks or decreased unit availability for resources. For detailed information about Resource Overallocation, see the Resource Overallocation Online Help Article.

A resource is overallocated when it is assigned too much work to complete within the resource's available time. You can resolve resource overallocation by adjusting either tasks or resources in your project. For detailed information about Resource Overallocation, see the Resource Overallocation Online Help Article.

To level tasks for certain resources, go to “Team” menu and click the “Level Resource” button. In the “Level Resources” dialog, select the resources for which you want to level tasks and click the “OK” button. A summary of how Project Plan 365 fixed the overallocation will be displayed. Click the “OK” button for the changes to be applied. For detailed information about Resource Leveling, see the Resource Leveling Online Help Article.

To level only the selected tasks, go to “Team” menu and click the “Level All” button. In the “Resource Leveling” dialog, the “Selected tasks” option and click the “OK” button. A summary of how Project Plan 365 fixed the overallocation will be displayed. Click the “OK” button for the changes to be applied. For detailed information about Resource Leveling, see the Resource Leveling Online Help Article.

To level the entire project, go to “Team” menu and click the “Level All” button. In the “Resource Leveling” dialog, the “Entire Project” option and click the “OK” button. A summary of how Project Plan 365 fixed the overallocation will be displayed. Click the “OK” button for the changes to be applied. For detailed information about Resource Leveling, see the Resource Leveling Online Help Article.

Use resource leveling technique to resolve resource overallocation in tasks. Project Plan 365 evaluates resource allocations and adjusts your plans so that your resources are not overallocated. For detailed information about Resource Leveling, see the Resource Leveling Online Help Article.

Resource leveling is a technique in which start and finish dates are adjusted based on resource limitation with the goal of balancing demand for resources with the available supply. For detailed information about Resource Leveling, see the Resource Leveling Online Help Article.

Yes. Project Plan 365 can automatically resolve resource overallocations using Resource Leveling. For detailed information about automatic leveling, see the Resource Leveling Online Help Article.

The Team Member Planner dialog is available on Project Plan 365 for Windows and Mac.

The Work Schedule Calendar functionality is currently available on the Windows and Mac platforms.