Here's how to tag sources from Gemini Notebook, formerly NotebookLM, in the Kortex Workspace, and then filter by tag. Open the Workspace with the Dashboard button in the side panel, then choose Sources. It shows every source from all your notebooks.
Tick each source you want to label. The search box and the filters help you find them. Click Tags in the toolbar, and pick a tag you've already made.
Click Filter to show only sources with a tag. Tags also show in the Tags column. Notebooks have their own tags.
In Notebooks, tick rows and choose Tags the same way. To rename, delete or create tags in one place, open Manage Space in the sidebar. It holds notebook, source and artifact tags.
Tag your sources, then find them by tag.
