Freshworks CRM offers the flexibility to mark a field read-only. Information that you don’t want anyone else to tamper with can be marked as read-only.
To mark a field as read-only,
You can make a field read-only either while adding a new field (custom fields) or editing an existing field (default and custom fields).
Go to Admin settings > Contacts/Accounts/Deals Module/Custom Module > Add Fields.
Click the dropdown icon on a field and Enable the Read-only check box for a field.
Alternatively in the Add Field/ Edit Field overlay, you can enable Mark this field as a read-only checkbox.
Note: Only the fields that are not required (mandated), can be made read-only. i.e: For all required fields, the read-only option is disabled.