Hi Pedro,
Thank you for using Syncfusion products.
We would like to suggest you look at the "Cell Comment
Tip Demo" sample for achieving your reported query. The sample can be found
in the below location.
Location:
<Installed Location>\Syncfusion\EssentialStudio\11.4.0.11\Windows\Grid.Windows\Samples\ToolTip\Cell
Comment Tip Demo\
Please let us know if you need any further assistance.
Regards,
Anish