If you encounter an issue where the configurations cannot be applied from Capacity Scheduler View, you should go to the local Ambari Server instance managing the cluster and directly edit the Capacity Scheduler configuration from the YARN configuration page.

In the local Ambari instance, using Ambari Web, browse to >Services > YARN, then click the Configs tab. On the Advanced tab, expand Scheduler.

In Scheduler you can edit the underlying configurations for the YARN Queue Manager and fix any issues you may encounter.