First, read the English article below.

This button is on the MS Word toolbar at the top of your screen. This button looks like the bottom half of a page above the top half of another page. It will end your previous page and start a new one. It’s on the MS Word toolbar at the top of your screen. This button is located next to the Mark Entry button on the References toolbar. It will open a dialogue box titled Index. You will choose from Indented and Run-in. An indented index will be easier to navigate for readers, whereas a run-in index will take up much less space on the page. You will be able to preview all different types and formats in the Print Preview box as you customize your index. You can customize your index by selecting a design from the available format presets.  You can also create your own design by selecting From template, and clicking the Modify button. This will let you customize fonts, spacing, and style for all entries and subentries to create your own design format. You can preview different format designs in the Preview box before you decide. You can increase the number of columns in the Columns box to take up less space, or you can set the number of columns to Auto. This will create an index page with all of your marked entries and their corresponding page numbers. You can use this index to look up the pages where important terms and concepts are mentioned throughout your document. 

Now, please write a short abstract for it in Vietnamese. Abstract:
Cuộn xuống và nhấp vào phía dưới trang cuối cùng. Nhấp vào thẻ Insert (Chèn). Nhấp vào nút Page Break (Ngắt trang) trong thanh công cụ Insert. Nhấp vào thẻ References (Tham chiếu). Nhấp vào Insert Index (Chèn chỉ mục). Chọn loại chỉ mục. Chọn thiết kế chỉ mục trong phần Formats (Định dạng). Thay đổi số cột. Nhấp vào OK.