OpenCart customization- Add a button on "Product Page" to show additional options

Hello freelancers, I have a customized website selling adult items. I need a button on every "Product Page" to show additional options only if the button is clicked. What needs to be done: 1. Add a button under all the other options on each "Product Page" to 'View more options. The button should be similar to the existing buttons on the page. 2. Customize the "Products-Option" section in admin to allow this when entering an "Option" or editing an existing "Option", for example: Add a field "Show this option only under 'View Additional Options' " Default should be to show normally, NOT only under 'Additional Options'. Obviously, if the "View Additional Options" button is clicked, the product's options that have been set as 'additional options', will be shown below the button. If the button is clicked again, they should again be hidden. This "View Additional Options" will be used to show accessories that are not necessarily of interest to the customer, and require a lot of space to show. They should only be shown if the customer wants to see them. This was more difficult to explain than I anticipated. I hope I made it clear what I need. Thank you for your interest and wish you well. Martin