The easiest way to set a category or a family member is to select one ore more transactions and drag them with the mouse to the necessary category. Batch editing allows you to set a category to a group of records and also rename them, set status, hide records from other users, protect from editing and much more. Select several records (you can use filters to select the records), right click and select batch editing.

 

Hint: enter space in the text field to clear description, comment, etc.