header
No, but you can use the insert command to insert a new worksheet (a workbook is a collection of worksheet).
Right-Click on a tab at the bottom of the workbook and insert new sheet.
Click the Insert tab then look for Header & Footer Group.
6
The simplest way is to right click on the sheet tab and pick Insert.
Yes, you can insert an image anywhere in the code. You just have to insert the img tag before the area you want to insert it.
Insert
If Your asking like on microsoft word then you go to insert and then click on the word header and then u click what kind of header you want
The "Insert" tab.
To insert headers and footers in Microsoft Word, go to the Insert tab on the Ribbon. Click on "Header" or "Footer" and then select the desired style from the drop-down menu. You can then customize the header or footer with text, page numbers, date, time, and other options.
In Word 2000-2003, use View>Header. As soon as you insert something in the header or footer, it remains part of your document. In Word 2007-2010, choose the Insert tab of the Ribbon, find the Header & Footer group and click on Header or Footer. You will see a selection of pre-formatted header/footers that you can apply, or you can choose Edit Header or Edit Footer to create your own.