Hi @dunny2005, Compiz is already one of the Window Managers in MATE-Tweak as seen here near the bottom:
There's a very useful magnifier enabled by default. Press "Super" (Windows Key) and scroll in an out with the mouse wheel. This plugin is called "Enhanced Zoom Desktop" and very popular.
Compiz is a unique Window Manager and other things come with it like animations. But changing Compiz plugin settings takes a separate program called compizconfig-settings-manager (CCSM).
Compiz does have another magnifier I do not use that but it is not enabled by default.
Compiz takes a little getting used to but well worth it for this zoom feature in my opinion. I use "Enhanced Zoom Desktop" regularly.
I hope this gets you started.