Enterprise resource management and allocation in Plan 5

Hi Odeds36, my understanding of the situation is that both 'Planner' and 'Project' fall under the same license.

'Project' definitely allows for viewing and comparing how resources are used across projects, using 'Project Online'. I believe this is what Plan 5 is referring to.  

I believe 'Planner' may have a 'lite' version you can use through Power Apps called https://learn.microsoft.com/en-us/dynamics365/common-scheduler/schedule-anything-with-universal-resource-scheduling

(EDIT: Actually, reading it now, it seems you need either Dynamics 365 Field Service, Project Operations, or Customer Service... you can still access the app? ...)

I don't have much more information on how much functionality it provides as it requires enabling by Admins which has not happened in my company at this stage (or maybe i don't have the right access, who knows!). I also have a plan 3 license at the moment and can access some parts of the App through 365 Apps:

Hopefully that can at least start you down a path of information!