Category restriction for members

Hello Everyone,

I recently wanted to work with the membership plugin which I purchased and was happy with the idea that I could block off certain parts of the website based on category for certain members. which I found out here:  https://anspress.io/downloads/anspress-paid-membership/ and so on my website I went onto the WordPress admin panel and under “Anspress > Options > User roles” I had found a screen similar to this:

What I am confused about is why is the category restriction not listed there? The category plugin is installed, I have a few categories I have created for testing and still I cannot see the same page as the one on the plugin page. I have changed the User role from Admin to others and same result. I created a new user role, same results. Any help is appreciated. Thanks.