Please refer to our documentation and follow the step-by-step guide there on how to enable sorting. There is also a very helpful example of Grid sorting:
If you are making multiple data operations, we recommend using process and onDataStateChange event, as shown here: https://www.telerik.com/kendo-react-ui/components/grid/data-operations/local-operations/
The arrows should appear automatically if the sort is used correctly, they are based on the information passed to the sort prop of the Grid:
If after following the steps in our documentation, there still are issues/unclear things, please send us an example of the Grid you want to implement sorting to, so that we can debug the code.
Hope this is helpful.
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