Currently we don't have option to create a dataset with manual entry like Excel.
User has to import the CSV or Excel.
Instead , if we allow add rows and columns and update dynamically, it will useful.
Use case:
Currently we need some user inputs and map with existing data.
For this we are asking people to update in excel and upload manually.
Instead, if we have provision to update the values directly in Dataset, it will reflect in workbook immediately.