Sign in screen template

Hey thunkers!
I need help in using the sample sign in screen project. I have made a lot of progress in my app using thunkable but now i need to add a sign in screen.I found the tutorial on Thunkable’s YouTube channel but i do not know how to add the sample project in my app as starting it again would not be possible.
Do help me if you have a solution.
Waiting for your reply!

image

Thanks for the screenshot of the blocks but do I only need to add these blocks on the coding or I have to also add something on the design screen as well??