Listing Duration

I am trying to create a site where members can pay to list their business for 1, 3, or 6 months at a time. I know this I not a custom function but what would I have to edit to fix this problem, I would hate to have to scrap this plugin and start over. I do have some PHP knowledge.

I am having issues with the other support forum that you posted so I posted my question here.

https://ww.wp.xz.cn/plugins/chamber-dashboard-business-directory/