When manually adding references to Zotero, you can use the tab-key to jump from one data-field to the next. This allows to quickly fill in data without taking you hands off the keyboard. What I am missing is the possibilty to add additional authors without having to use the mouse to press the white&blue plus-button (99% of my references have several authors). It would be nice if the tab-key would jump to the plus button, and upon pressing enter, a new author-name-field would appear.