Hey there please choose one of the predefined templates mentioned on the documentation https://themeofwp.com/plugins/vc-datatables/doc/#usage and see the predefined templates section https://themeofwp.com/plugins/vc-datatables/doc/img/usage_1.jpg You can pick one of them and it will automatically be inserted. Also please watch this video https://www.youtube.com/watch?v=9dxPNB-ScOc

Thanks,
Kevin JOY.