Quick button needed for admin side of coursepress

I'm looking to add three buttons in the admin side of coursepress. I basically need to add three buttons....one to quickly set the grade as 1, one to set the grade as 50 and one to set the grade as 100.

https://cdn.livechat-static.com/api/file/v2/lc/att-old/8801096/8015f23b3f376124dd90318d0386aebc/Screen%20Shot%202018-10-19%20at%2017.25.46.png