1, understand the format requirements: first read the format requirements of schools, disciplines or periodicals, and understand the specifications of the appendix.

2. Determine the content: determine the charts that need to be included in the appendix. Usually, these are data and charts that are related to the main content but are too detailed or lengthy.

3. Create a new chapter: create a new chapter at the end of the paper with the title "Appendix" or "Appendix A". If there are multiple appendices, please mark them with letters "A" and "B" respectively.

4. Insert the chart: insert the selected chart into the appendix chapter to ensure that each chart has a clear title and corresponds to the references in the text.

5. Numbering and citation: number each chart in the appendix, such as "Appendix A Chart 1", and use the corresponding number when quoting these charts in the text.

6. Add notes: Provide necessary notes at the bottom of each chart to help readers understand the contents in the chart.

7. Format adjustment: check the size, font, color and other formats of the chart to ensure that it meets the requirements of the specification and is consistent with the text.

8. Update the table of contents: After the appendix is completed, update the table of contents of papers so that readers can find the appendix quickly.