Final answer:
To ensure only numbers between 1-100 are entered into a field, use the validation rule field property.
Step-by-step explanation:
To make sure that only numbers between 1-100 are entered into a field, you would set this restriction in the validation rule field property. The validation rule allows you to define a condition that the data must meet in order to be accepted. In this case, you would set the validation rule to check that the entered number is between 1 and 100.