To add continuous line numbering to a document in Microsoft Word, you would typically find the command in the Layout tab. Here's how you can do it:
1. Open your document in Microsoft Word.
2. Click on the Layout tab at the top of the Word window.
3. Look for the Page Setup group within the Layout tab.
4. In the Page Setup group, you should see an option for Line Numbers.
5. Click on Line Numbers, and a drop-down menu will appear.
6. From the drop-down menu, select Continuous. This will add continuous line numbering to your document.
If you don't see the Line Numbers option in the Page Setup group under the Layout tab, you can also check the Page Number option in the Insert tab. However, the more common location for adding continuous line numbering is in the Layout tab's Page Setup group.