This article provides detailed instructions for editing spreadsheets in Excel.

1. Inserting Rows and Columns:
- For example, to insert a column right after the first salary column:
Step 1: Select the 'Number of Days' column -> Go to Home -> Cells -> Insert -> Insert Sheet Column:

Step 2: After selecting, the new column is inserted to the left of the chosen column.

- Example of inserting a row after the 2nd row in the sequence:
Step 1: Select the 3rd row for the employee 'Manh Tuan' -> Go to Home -> Cells -> Insert -> Insert Sheet Rows:

Step 2: After selecting, the new row is inserted above the selected row.

2. Merging Cells in Excel.
Step 1: Select the cells to merge

Step 2: Go to Home -> Alignment -> Merge & Center (or choose another merge style from the dialog box):

Step 3: Result after merging cells:

- To split merged cells back to their original state, go to Home -> Alignment -> and click Merge & Center again.

3. Aligning Text within Data Cells:
For example, to adjust text in the title column from the bottom left to center within the cell.

- Method 1:
Step 1: Select the header row you wish to format -> right-click and choose Format Cells:

Step 2: In the Format Cells dialog box, select the Alignment tab:
+ Horizontal: Select Center.
+ Vertical: Select Center.
Finally, click OK to finish:

Step 3: After clicking OK, text aligns perfectly with the cell size:

- Method 2: Select the header row for alignment -> Home -> Alignment -> click on the Middle Align icon:

Above is a detailed guide for editing tables in Excel 2013.
Wishing you success!
