Available in: both Salesforce Classic and Lightning Experience
Available in: Contact Manager, Group, Professional, Enterprise, Performance, Unlimited, Developer, and Database.com Editions
Standard fields are not available in Database.com
Lightning Connect external objects are available in: Developer Edition and for an extra cost in: Enterprise, Performance, and Unlimited Editions
From the object management settings for the object whose fields you want to view, go to Fields.
Click the name of the field.
To modify a custom field or change the data type, click Edit.
If a custom field exists in a Managed - Released package, click Delete to delete the custom field component from future installations.
To set users' access to the field, click Set Field-Level Security. Available in Enterprise, Unlimited, Performance, and Developer Edition organizations only.
To view who can access the field based on permissions and record type, click View Field Accessibility. Available in Enterprise, Unlimited, Performance, and Developer Edition organizations only.
If the field is a dependent picklist, view a list of the controlling fields on which it depends. Click New to define a dependent picklist. Click Edit to change the picklist dependency rules or Del to remove the picklist dependency.
If the custom field is a dependent picklist, click [Change] next to the controlling field to edit the picklist dependency rules.
To create a new validation rule for the field, click New in the Validation Rules related list. Click Edit to change a validation rule or Del to remove it. Not available for external objects.
For picklist fields, you can add new values and edit, replace, or delete existing values.
To restore the field and its data, click Undelete. This is available only if the field has been deleted but not permanently erased. The field's behavior may be different after restoring it. To restore the field completely, see Managing Deleted Custom Fields.
If your organization uses person accounts, the Account Fields page lists both person account and business account fields.
Person accounts use a combination of account and contact fields. The following contact fields are available for person accounts, but not for business accounts.
Fields in the Account Standard Fields list that display with a person account icon.
Fields in the Contact Custom Fields & Relationships list.