how do I install a purchased font into Indesign Cloud? I already use the font in the previously purc

how do I install a purchased font into Indesign Cloud? I already use the font in the previously purchased CS5.5 Edition of indesign on the mac - but the cloud version of the same document won't open without requesting to change the font. How do I import the font I own into Indesign? Beginner user. Journo Student