Workload

Is there a way to view a team member’s workload for all tasks assigned to them even if they are assigned by a different team? As far as i understand, you can view workload in Portfolio but the projects in the portfolio have to be added in manually and i don’t have visibility of a new task assigned by a different team.

It would be ideal to have a task count/effort field in a report that i’ve created for all tasks assigned to a particular person.