Question: Is there a way to disable multi select?

Answer: 
In don't know of any setting to disable it.

handle the `onSelectedRowsChanged` event and do something like:

```
var selectedRows = grid.getSelectedRows();
if( selectedRows.length > 1 ) {
  grid.setSelectedRows( [ selectedRows[ selectedRows.length - 1 ] ] );
}

```
```
<select multiple="multiple" size="3">
    <option value="1" disabled>One</option>
    <option value="2" disabled>Two</option>
    <option value="3" disabled>Three</option>
</select>

```