First, you need to install Mendeley Cite in MS Word. After that, to insert a citation or footnote into a document 10 steps:

Steps 1-2-3-4-5-6: Place the cursor where you want the citation (1) > click on References (2) > Mendeley Cite (3) > enter keyword(s) (4) > check box(es) (5) > Insert citation (6).

Steps 7-8: To add page information to a citation; click on citation on document (7) > citation on Mendeley Cite panel (8),

Steps 9-10: Add page number (9) > click on Save changes (10).

The citation creating is completed as stated below.

Note: In-line or footnote format depends on the selected citation style. You can reach citation settings from “d) Choosing, Finding and Editing Citation Styles”.

The steps for creating a bibliography are explained in section “b) Creating and Editing a Bibliography”.