set_group_properties() *

* Please note this feature is only available in paid versions.

Parameters:
- $column_name: column name for grouping
- $groupCollapsed: boolean value indicating whether to expand or collapse grouping when displayed. The default is false.
- $showSummaryOnHide: boolean value to whether display group summary when grouping is collapsed. The default is true.
- $groupColumnShow: boolean value to display group column. Default is false.
- $hideGroup: boolean. Hide grouped rows. Default is false. (v7.1+)
Description:
- Group grid values simply by specifying a column name.
Remark:
- Single level grouping is currently supported.
- When grouping is enabled, the followings methods are disabled:
  - enable_rownumbers();
  - set_subgrid();
Example:

1	$dg -> set_group_properties('customerNumber');