You can do it in two ways.
- Add more data to an existing project. See the separate question in the FAQ for this.
- Create a new project and use the model from an old project to apply to the new data. Here is how you do that: create a new project and upload your data file. Wait for it to initialize. Open the project. Now you will be on the screen where you have to choose the column that contains the text and the language. Below the drop-down menu, where you choose the text column, is a text field where you can also enter the ID of an existing project whose model you want to apply on the new project. If you do this, any pinned topics and groups from the old project will be applied to the new project.