1. Drag and drop: click on the double vertical ellipses on the left side of the citation, drag it to the desired place, and drop it.

2. Move an item manually: click on the horizontal ellipses on the right side of the citation and select move item. Next, select where you want the item moved to within the current list or another, (if you have multiple lists) and which section you want it in (again, if you have multiple sections).

To delete a citation, (1) go to the citation and click the box on the left side of the citation. You will see options populate at the top of the list. (2) Click "Delete" to remove the citation. 

To delete citations in bulk, click multiple citation boxes on the list, and click "Delete" at the top of the page. You will be asked to confirm your selection (see second screenshot):

There are two options

(1) First click on the arrow (on the left of the citation) to collapse the section, then hover over and click the vertical ellipses to grab the section, and then drag and drop it where you want it:

(2) Check any collapsed section box to the left of the citation. You will notice all sections collapse. Choose one or multiple sections by checking their respective box and use the up or down arrows at the top of the list to move the sections. You can also delete sections by clicking on the "Delete section" option on the left side of the menu at the top of the list.