プロジェクトは開発環境や場所ではなく、コードベースとなります。
https://dhtmlx.com/docs/faq.shtml
We want to use DHTMLX component for both web and mobile apps. Which license do I need to purchase?
If it’s the same application with the same codebase, then the Commercial license is enough.
If there are two different applications with different codebase you need to purchase
one Enterprise license or two Commercial licenses.
If there are more than five different applications with different codebase you need to purchase
one Ultimate license or several Commercial or Enterprise licenses.
Commercial 開発者数:5 プロジェクト数:1
Enterprise 開発者数:20 プロジェクト数:5
Ultimate いずれも無制限となります。