How to implement multi-level headers in a basic table (ListTable)?
Question Description
How to construct such hierarchical structure to display in table header cells like: Department (Finance, Technology), Name (First Name, Last Name)?

Solution
In VTable, the configuration option "columns" can be used to configure sub-items under "columns".
Code Example
{ field: 'full name', title: 'Full name', columns: [ { field: 'name', title: 'First Name', width: 120 }, { field: 'lastName', title: 'Last Name', width: 100 } ] },
Results
