→ Download the latest release of the Just Playout bundle which includes the most recent version of composition:builder.
Extract the ZIP archive.
Open the DMG and follow the shown instructions.
Optional: Install the → Template Package afterwards.
Upon completion of the installation procedure, composition:builder can be found in the Just Playout folder inside the Applications folder of your Mac.
We do not recommend running composition:builder on a machine where just:out is installed. Please use a dedicated machine for graphic template creation.