Hi Shannon,
Greetings from Syncfusion support.
Query : Support Copy and Pasting of multiple cells
We have inbuilt support for this requirement, please refer the below reference links for more details,
Query : A user should be able to click a cell to begin editing
We have already documented single click batch editing in our documentation section. Please refer the below documentation for more details.
Query : A user should be able to use Tab to begin editing the next cell in the same row
We have inbuilt support to start edit a cell using Keyboard shortcut F2 key. You can select a cell/row and press the F2 key to start editing for that cell. We suggest you to refer to the below documentation for the available inbuilt keyboard navigation support in grid.
Please get back to us if you need further assistance.
Regards,
Renjith R