Add the keys for the accented letters to your usual layout
Go to Esperanto Keyboard for Mac
and download the Esperanto layout files. Follow the instructions on that page to add the Esperanto characters to the U.S. layout. The menu names may vary a bit with the version of OS-X. Then click on the keyboard layout symbol, a tiny flag in the righthand side of the upper toolbar, and choose the Esperanto flag. You can then type the accented characters using the alt/option key and the appropriate letter (with shift for upper case). The diagrams in the above reference show clearly which keys to use. Note that it also sets up four dead keys, which may be useful for typing in some European languages.
International keyboard with dead keys
If your main language is English, but you want to be able to type in Esperanto and other languages based on Roman letters, you can enable the layout U.S. Extended. No download is required for this method. Go to: System Preferences (Sistemaj preferoj), Language & Text (Lingvo kaj teksto), Input Sources (Enigaj fontoj), tick U.S. Extended, close. Other layouts may also be used, e.g. Finnish Extended, for Finnish and Swedish with Esperanto.
To type the accented letters, hold down the alt/option key and press the accent key (6 or B) and then the key for the letter. For instance, for Ĝ: option 6 then shift G. For ŭ: option B (for breve) then U. You can type macrons for Māori words this way too. For ō: option A then O.
U.S.ExtEsp keyboard layout uses semicolon as dead key
This method is similar to that of the International keyboard.
advantages of the U.S. ExtEsp layout are that the semicolon key is
easily accessible (at least on a US keyboard), and this arrangement
does not interfere with typing in English or other languages based on
the Latin alphabet. Detailed information is available in ReadMe.pdf on our Downloads page.
set up this arrangement on your Macintosh requires an OS-X virtual keyboard file. It
can be downloaded from the web-site of Amerika Asocio de Instruistoj
de Esperanto (AAIE) by clicking on this link:
Unzip the downloaded file and follow the instructions in the file ReadMe.pdf.
Insert menu in applications
Various programs for Macintosh have menus for inserting special characters, e.g. TextEdit, OpenOffice and LibreOffice.