After you have inserted one or more citations you can use Mendeley Cite to automatically create a bibliography of all the references you’ve cited. Position the cursor where you want the bibliography to appear in your document and go to the Mendeley Cite add-in window. Select the 'More' menu and select the ‘Insert Bibliography’ button in the drop down menu.
Mendeley Cite will style all of your citations and bibliography according to the citation style you have selected.
Your bibliography will automatically reorder and restructure itself every time you add an additional citation - there's no need to completely rebuild it.
Mendeley Cite will also automatically renumber the items if you insert a new citation earlier in the document.