
Using Google Docs only works if you are working on a draft of a paper with a group of people. I have never relied on it for final formatting of a document because of the well known issues behind it. This is such a proprietorial piece of software that it doesn't play nicely with MS Office. It just doesn't translate well. You would be better off using some other form of free encoding software like Libre, Kingsoft, and whatever apps come with a Mac. Those have no problems with formatting because they follow the commonly used MS Office versions. While those programs do have a learning curve, it beats having to try to figure out how to use Google Docs.
I have known people to use Google docs only as a last resort. Usually when taking an online class with a group of people and they happen to be working on a group project. Or, independent writers and programmers working on a lucrative programming deal but residing in different parts of the world. Even then, they finalize offline using a more reliable software. However, if you really want to complete your document using Google Docs then this is how you do it:
1. Open the document in Google Docs
2. Click on Insert . Header / Footer
3. Choose one of the two
4. Insert the information you need
The above instruction works for the general header or footer. If you need to change it for the first and second pages, then click on Different first page Header / Footer. Note than you can only change the first page information. The rest of the pages will have uniform information for the header / footer.