Thank you for your help very much!

Here is what I did. I did number 1 as you said and it worked, but it showed linking to apps and I thought Ill remove it later... and while doing question 2, I noticed that there is a check mark for "fixed header". So I went back to designer, set it back to standard, then on developer clicked on fixed header. So it worked without needing to look for apps linking...

For number 2, I need to find it first, lol...

Thank you again for your help!!