The Resource Information as the name describes it, allows to view basic information about the selected resource and the resource's availability and also you can change the resource name, Initials, Group, or Code for the selected resource.

Project Plan 365 app will not move your task automatically if you have the same resource on two parallel tasks. 

The application tells you that you have an overallocated resource by making the entire resource font with red in Resource Sheet view.

If you want tasks to be in sequence, you need to link the tasks and specify a predecessor.

In the Gantt Chart, go to the Resource Names column. Click on the arrow and pick the resources to work on the task.

With contextual New Resource option allows you to insert a resource at any position in the list of resources from your project: either on top of the list, in the middle or at the bottom the list. In case you select a row in Resource Sheet and press Insert option the newly added resource will be inserted in the resource list above the selected row.

What does the “Insert Multiple Resources” functionality do?

The “Insert Multiple Resources” functionality allows you to insert multiple resources at the same time.

Deleting a resource from your project may affect your schedule and you may run into problems. The resource assignments involving a resource are also removed from the tasks in your project: deleting a resource means any assignments you’ve made are gone as well, such that you run the risk of orphaning tasks without anyone to perform them. Costs could change: when you remove a resource from a task, the application deletes any actual costs associated with the resource.

What does the “Delete Resource” functionality do?

The “Delete Resource” functionality, as the name describes it, allows the possibility of erasing a resource from a project.

What does the “Delete Multiple Resources” functionality do?

The “Delete Multiple Resources” functionality, as the name describes it, allows the possibility of erasing multiple resources at a time from a project.

To set the amount of work that people perform on tasks you need to keep in mind that you need to add people to your project schedule before so you can assign them to work on tasks. Click View – Gantt Chart – in the Work column of a task enter the amount of time desired.

What does the "Set Resource Units" functionality do?

To specify the consumption rate of a material resource, in the Units field, type a decimal that indicates the amount of material to be used for this assignment, and then enter the material label. 

For example, if you're using 20 yards of lumber, type 20. 

The resource units can be changed in Gantt grid on resource name cell amid [] type desired value units.

To change the percentage of working time for a resource, in the Units field, type a percentage less than 100. The resource units can be also changed in Gantt grid. On resource name cell amid [] type desired % units

Unit availability represents an amount of time, expressed as a percentage or a decimal number, that a resource can be scheduled for assigned work. It refers to the availability of a resource; for example, a resource may be available 50%, 100%, or 300% of full time.

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.