How to set rules for your form

• Number: To ensure the answer contains a certain number, in the drop down menu, select Number. Then, select one of the options for your rule.
• Examples:
  • A number greater than or equal to 50
  • A number between 21 and 42
• Text: To ensure the answer contains certain text, in the drop down menu, select Text. Then, select one of the options for your rule:
  • Example: Make sure that answers contain the word "candy.”
    • Make sure the response is in email format text@example.com.
• Length: To set up a maximum or minimum character count for your answer, in the drop down menu, select Length. Then, select Maximum or Minimum character count, and the number.
  • Example: Limit answers to 500 characters or require at least 200 characters.
• Regular expression: To require text answers to match certain formulas that you choose, select Regular expression. Then select one of the options in the drop down menu (Contains, Doesn’t contain, Matches, Doesn’t Match) and add the pattern. Learn more about regular expressions.
  • Example: Response must be a 10-digit phone number, where the range for each digit is 0–9.
    • Input: Regular expression Matches [0–9]{10} 
    • Expected result: 1234567890

• Length: To set up a maximum or minimum character count for your answer,  in the drop down menu, select Length. Then, select Maximum or Minimum character count, and the number.
  • Example: Limit answers to 200 characters.
• Regular expression: To require text answers to match certain formulas that you choose, select Regular expression. Then select one of the options in the drop down menu (Contains, Doesn’t contain, Matches, Doesn’t Match) and add the pattern. Learn more about regular expressions.
• Example: Response must be a 10-digit phone number, where the range for each digit is 0–9.
  • Input: Regular expression Matches [0-9]{10}
  • Expected result: 1234567890

• Select at least: Set a minimum number of boxes that can be checked.
• Select at most: Set a maximum number of boxes that can be checked.
• Select exactly: Specify the number of boxes that must be checked.

In multiple choice grid questions responders can only choose one column per row.

To set up your question:

1. In Google Form, click Add .
2. Add your question to the “Question” field.
3. To the right of the question title, choose Checkbox grid .
4. Add the options for the rows. For example: A, B, C.
5. Add the options for the columns. For example: 1, 2, 3.

To custom your question you can set up these options:

• To make sure responders choose an option from each column, turn on Require a response in each row. If they don’t, they get an error message and can’t continue. See how to set up an error message.
• To limit answers to one choice per column:
  1. At the bottom right, click More .
  2. Check the box next to “Limit to one response per column.”
• To shuffle the row order every time the survey is open:
  1. At the bottom right, click More .
  2. Check the box next to “Shuffle row order.”

Example of “Limit to one response per column”

Input:

• Rows: A, B, C
• Columns: 1, 2, 3

Result: Responders can choose one row item (A, B, C) for each column (1, 2, 3). If they check multiple rows in a column, they get an error message.