The Atlassian Community can help you and your team get more value out of Atlassian products and practices.
For Project manager I think will be interesting: Jira Automation (built-in solution)
Also, there are many tools from Atlassian Marketplace.
Time in Status for Jira Cloud (add-on)- lets you monitor how long issues stayed in the specific status.
Service Desk (built-in tool) and SLA Time and Report (add-on) will help you with L1, L2 and L3 support.
There are many tools, tips and trick at the Jira, all depends on your needs.