Add password-protected content functionality to my website

Hi guys, Simple task, but I'm super sick right now, so can't deal with it. I need your help for this section of my website ([login to view URL]) which I'm working on. The website is using wordpress along with a few ecommerce plugings, namely woocommerce and dokan. Dokan allows multivendor marketplace functionalities. Right now, when you click the 'weddings & private events' section, it displays some default/landing content. I need the black login button at the end of the content to trigger the same login form as in the header. Then, once/if the visitor is logged in, password-protected content is displayed. Please refer to the attached pdf for more details and hit me up if you're up for it, need for info, etc.