On certain screens you will notice a edit button appear within some of the tables, often in the top right hand corner.
By clicking on the edit button you will be able to access a range of different editing options.
For example; within the Watchlist tool on the right of "Watchlists" clicking on the edit button will allow you to either create or delete a watchlist, re-name an exiting watchlist, or make a copy in order to be able to edit from an existing list.
All edit buttons will allow you to perform different actions within different sections, so be sure to click on it in order to learn more about the features can do.