You should use Lock/Unlock to change whether the field is enabled in the form. Enabled means that a user can change the value in the field. If you disable a field, it is read-only, and the user cannot click into the field or change its value.
As shown in the following figure, the options to change visibility are Lock and Unlock:
Figure 4.8 – Setting a field as read-only
The preceding screenshot shows how you can set a field as read-only. The final action, Recommendation, provides a suggestion to the user when entering data in forms.
