Help me! Doing calendar, how I did webpages 20 years ago

Build issue
1

I think that i took the date_field from the market.
My app is here.
https://platform.preview.appgyver.com/448028/calendar/page.Page1

I don’t know how to continue?
Which component is needed , where it is supposed to go and which logic to put and where?

2

Can you supply more information and perhaps deploy the app to the build server and send the link?