Note: Since version 2018.2.3261, this property is deprecated. Use columns.list instead.
The columns property (array) sets custom calendar columns in the resources view.
id (string): resource id (optional)
name (string): column name, it will be used to create "html" and "toolTip"
start (string or DayPilot.Date): column date (startDate will be used during initialization if not specified)
html (string): HTML to be displayed in the column header (optional)
toolTip (string): hover tooltip text (optional)
children (array of columns): column children when displaying column hierarchy
dp.columns = [
{ name: "Meeting Room A", id: "A", start: "2015-04-14" },
{ name: "Meeting Room B", id: "B", start: "2015-04-14" },
{ name: "Meeting Room C", id: "C", start: "2015-04-14" }
];