Broaden Date Range of Scheduling Tool

In our organization, we have projects that last anywhere from 30 - 150 days. The Scheduling Tool would be helpful, but it only populates tasks for 2 weeks at a time. Is there a way to populate a full project so Project Owners/Resource Managers can assign resources seamlessly?

Also, it would be helpful if you didn't have to assign a Resource Manager in order to use the Scheduling Tool. In our world, we have an Analyst that assigns resources into the timeline and it's not always a user's manager or the Project Manager.