Yes! It is possible to require your users to enter data in a specific format.
To do this, you would use the Field Mask feature. Some examples of when you would use field masking are when your users must enter an Employee ID or a Job Code that requires both letters and numbers. You may have an ID or code that is formatted as LLL000000, where L is a placeholder for a letter and 0 for a number. With this example, you can ensure that the first three characters are letters and the last 6 are numbers.