could you please clarify what exactly do you trying to do?
If you mean the license number you’ve got after obtaining dhtmlxGantt, it is only used for logging in into support system support.dhtmlx.com/ and sometimes you may need it to clarify the subscription details with our sales.
What do you mean by implementing license number into your project?
Yes, that is correct. Components don’t do any kind of validation or activation to the external servers, js/css files are fully self-sufficient