Take a look at ActivityTimeline add-on for resource planning - it warns you (red color on the schedule) if there is too much work allocated to a resource.
Details on how it works: https://activitytimeline.com/how-it-works.html
Official Marketplace Page: https://marketplace.atlassian.com/plugins/com.activitytimeline.plugin
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG