Yes, there is a faster way to apply the conditional formatting to all the rows in the column. You can use a formula-based conditional formatting rule that references the cell above the current cell.

Here are the steps to apply the conditional formatting rule:

1. Select the range of cells that you want to apply the conditional formatting to (in this case, A1:A4).
2. Go to the Home tab in the ribbon and click on Conditional Formatting New Rule.
3. In the New Formatting Rule dialog box, select "Use a formula to determine which cells to format".
4. In the "Format values where this formula is true" field, enter the following formula:
   
   
   Code:

   =A2A1

5. Click on the Format button and select the icon set with 3 arrows that you want to use.
6. Click OK to close the Format Cells dialog box.
7. Click OK to close the New Formatting Rule dialog box.

Now the up arrow icon will be applied to any cell in the range where the value is greater than the value in the cell above it.

To apply the down arrow and level arrow icons, you can create additional conditional formatting rules using the following formulas:

For the down arrow:

For the level arrow:

Make sure to adjust the cell references in the formulas to match the cells in your worksheet.

Once you have created all three conditional formatting rules, they will be applied to the entire range that you selected in step 1. You can test this by entering new values in cells A5, A6, etc. and verifying that the correct arrow icons are applied automatically.