AWS Supply Chain Demand Planning supports multiple override management

Starting today, you can now easily apply multiple overrides on a demand forecast, eliminating the need to create and select from multiple overrides before publishing a demand forecast. With this release, you can apply multiple overrides, enabling users to apply overrides at different products simultaneously. When you make an override, the override adjustment is aggregated upwards in the hierarchy as well as disaggregated to lower levels of the forecast hierarchy.

Source:: Amazon AWS