Idea Summary Add field to elements in the interactive grids to add a tooltip that displays for each column.
Use Case In all cases to rich column info display.
The grid widget that makes up Interactive Grid supports tooltips using the API. You can learn about it here https://docs.oracle.com/en/database/oracle/apex/24.2/aexjs/grid.html#tooltip and there are examples in my IG Cookbook on pages 14, 25, 26. get the cookbook here https://hardlikesoftware.com/weblog/2019/11/04/apex-ig-cookbook-update-for-19-2/
If you have questions you can search the APEX forum or ask a question there.