suppose i have three tasks, each task requires one resource (one engineer), if i have 3 separated resources, say A, B, C, how can I auto assign these resource to my tasks depending on availability.

As I know, one way I can manually assign A to task 1, B to task 2, C to task 3. But I have many tasks and many resources, I can't do it manually, is that anyway this can be done automatically?

One workaround is I create on consolidate resource by set its unit to 300%, indicating 3 engineers, then assign it to all tasks. but in this way I can't track which resource is assign to which task exactly.

any better idea? Thanks.