If all you want is to have them show up on your macro bar beneath the player avatars, and they are collection macros, select "show macro quick bar" in the collections tab, then to the right of the macro check the box "In bar". If it is a simple weapon attack or similar that shows up in your repeating attacks section of the character sheet (below hit dice in the 5E OGL sheet), you can drag the attack name and directly drop it right to the macro quick bar. If they are character "abilities", then below the ability name check the option "Show in macro bar". Dakota's method will create a button in the chat window that can call an ability, which is a different but also useful thing.