I have a grid with boolean values set to 'allow toggle' (J3.2 component)

However when someone toggles a value, the MODIFIED BY and MODIFIED DATE are not setting when this is actually a modification

Where can I set this?

Thanks

Toggle does not update the modified field, simply because these field are not always available in a component.

You will have to override the toggle function I think

Fixed since 2.7.1.
www.j-cook.pro/index.php/docs/versions/200-2-7-1-beta

Choose the beta version if you want to have this fix.
'Beta' version is the STS (Short term version) version on wich I put all new code of your generated components.