Our old application uses ASP.NET MVC Scheduler component which has GroupHeaderTemplate features to customize header rendering and add customization for following two functional features.

We are migrating applications to React. It seems like React Scheduler does not support GroupHeaderTemplate. We need the following two capabilities on custom rendering:

1. Customize rendering of resource group header & cell for vertical orientation of groups.

2. In the case of multiple groups, need the ability to make groups collapsible/hierarchical (like tree view nodes)

Need Terlik's guidance to achieve these two customizations on Kendo React Scheduler.