Click on the link and choose ... "Click here to Register"
Makr sure to Register. If you are already Registered ... after you "Click here to Register" you will see another option to "click here" and pay your fee.
https://sites.google.com/view/fairmonteastclassof1975/home?fbclid=IwAR3OfRbqlTIhrkvgGwz4Q9dQzFCO27Zogn-JsbGDi40K7RrzVH4cyxcTap8