Hi Niklas,
Please redownload Data widgets and replace with existing one. Now you can see the checkbox for grid 2.
I’m using 9.24.0 Mendix version Checkbox will appear once you can replace you data widgets.
I hope this one helps you :)
Hi,
I don't know if its the best method or intended method but how I got checkboxes on my data grid 2 was using the following steps.
There is no checkbox feature available in mendix 9.24, This feature will
come in mendix 10,so wait for the feature.