The Date Ago field allows you to specify a field that will be used as a reference to calculate the amount of time that has elapsed since that date. It is a great option if you want to know, how much time an individual has been your customer for example.
You could create a Date Ago field that points to a Date field where you have the date in which that person became a customer. The resulting value would be the number of years that have passed since that person became your customer. The value would read X years ago.
Configuring a Date Time Field
Give your field a name and add a field hint if desired. You can then select the section in which the field will be created or keep the default option.
The field type must be set to 'Date Ago'.
Then you will need to select the Date field that will be used as a reference for the value of this field.
Enable the 'Required' checkbox if the information for this field is mandatory. It means that if you enable this option, every time a team member creates a new record, they will need to input a date for this field in order to save it.
If you enable the 'Lock After Create' as its name implies, the field will be locked once the new record is saved and the value of the field will not be editable afterward.
Once you are done setting your field, click the save button.
Note: All new fields are added at the bottom of the form.