Enable canvas on trigger/disable on different trigger

I’m working on a really simple objective system, I need to enable a canvas showing the first task when the player enters a trigger and disable when then player enters another, I have checked lots of tutorials but none cover my problem. If anyone can help with this that would be great.

@Aurie88 I have a similar problem but I have seen a yt video and maybe it can help you! The vid:unity, how to enable/disable canvas by pressing tab (using script) - YouTube