addGroup^{(dataIndex: String, [expanded: Boolean])}

Adds group by index.

To use this method it requires to set property grouping: true or grouping: {}

If expanded is not true than all groups will be collapsed.

Example

var grid = new FancyGrid({
  ...
  grouping: true
  ...
});

grid.addGroup('team');

See also

Sample on JSFiddle
Method clearGroup
Doc link Grouping