Social Media Post Scheduler made in Unity (windows exe file)

Detailed requirement: -Upon opening the application it loads the screen as shown on screenshot. -There is a settings button on top where user can set FB group and linkedin Group they are a member in, also a page that they are managing -On the main window they can type a message and/or upload an image, then they can click on the date time to select when they want it posted and social media tick boxes to select where they want to post it. -Then there should be a button in the bottom that says Run to run the scheduled posts accordingly. -Would be nice if the post is unlimited, or if it should be limited perhaps by 50 posts.