Like as title. How i can build an application based on Cesium, application can help user management 3d tiles model and set custom location for it?
I think the easiest way to do this, instead of trying to rebuild the Cesium ion location editor, is to connect your application to Cesium ion with OAuth2: https://cesium.com/docs/oauth/.
This way, users can connect their Cesium ion account through your app, and then see their list of assets. To change the location your app can take them to the Cesium ion tool where they can edit this and it will automatically update in your app.