Hi David,

Thank you logging this suggestion. This seems like a nice idea and I hope it will gather traction for a built-in offering.

Regarding multi-value or array filtering, you have several current options:

1. Multi-checkbox filtering:
https://demos.telerik.com/kendo-ui/grid/filter-multi-checkboxes

2. Template:
- https://docs.telerik.com/kendo-ui/knowledge-base/multiselect-used-for-column-filtering
- https://docs.telerik.com/kendo-ui/knowledge-base/filter-grid-with-multi-select-widget

3. Custom filter function to handle the array logic:

dataSource.filter({
    field: "FieldName",
    operator: function(item, value){
        //implement your logic
    },
    value: 12
})

To summarize, I am afraid the Grid does not provide a built-in way to achieve this requirement, but it provides Templates and filter function which can be used to accomplish it.

I hope this information is helpful.

Regards,
Eyup
Progress Telerik