Once you have added some citations to your document you can create a reference list. Place your cursor at the end of your document where you would like your reference list to start and click on Insert Bibliography.
The bibliography will be formatted according to the citation style which you have active.
Each time you add a citation or make changes to your citations, the bibliography will restructure itself accordingly. For example, if you are using a numbered style and you choose to insert new citations early in the document, the bibliography will also re-number itself.