You set a task description on the extension's popup page and then this gets sent to the API which will figure what the relevant categories are (this doesn't always work perfectly but you can edit them yourself after).
If you want to switch contexts you can just set a new task, although if the topic is the same - e.g. machine learning both in the case of programming and literature research then you shouldn't need to.
If you want to switch contexts you can just set a new task, although if the topic is the same - e.g. machine learning both in the case of programming and literature research then you shouldn't need to.