Adding price variations for monthly subscriptions

I am setting up a new product page, and the product is life change coaching. I want to offer 3 prices:
6 months for $5,500
3 months for $3,000
2 months for $1,000

Where can I find instructions on how to set this up so they are all accessible from the one product page?

Is this done under “Attributes” or “Linked Products”

Thank you
http://www.lifechange90.com

https://wordpress.org/plugins/woocommerce/