Online based enable/disable option

Sorry for the vague title, I’ll try to explain exactly what I am trying to achieve.

I am developing an artwork website. On this website there is a page that allows people to check off that they’ve accepted my terms of service and fill out some information before sending a commission order form. Thing is, I don’t want this order form page to constantly be active. I need a private ‘accepting commissions’ option somewhere that I can toggle on and off so that I can stop people from sending me order forms by disabling some elements in the orders page. How could I achieve something like this?

Hello Graeme.
You can create new database with 1 item,with a checkbox. Set it to checked or not checked when it’s wanted.
Then on form page, you can check if checkbox is checked=>show form. If not =>hide.