If you have disabled editing with TMSFMXGrid1.Options.Editing.Enabled := False; then you should still be able to select rows, which will automatically change the active record.
This is what I thought either... however there is no selection capabilities at all on this particular grid, so I have selected or changed something else that made this grid to be totally read only and I am looking to understand that.
I will explorer deeper then... this one particular grid is having a strange behavior. It is like working as read only, it is not possible to interact with the grid in any way.
In other places of the software it work as expected.