How do I install this Red Sea cabinet opener replacement?

[laezur]

Please, please, forgive me for being terrible at DIY and being an absolute bone head but can someone tell me how to install this?

It looks different, and I can’t figure out how to place it to get it right

The big triangle bit seems to get on the way hahaha I’m so stupid

 

[laezur]

Hmmm annoyingly I cant seem to find anything on this on the internet so I'm not sure!