How can account ID be displayed

How can account ID be displayed

We are new to Zoho CRM and went through the import process for Accounts today.  We originally could not import successfully because the records from our previous system did not have an "Account ID" field.  We manually created this value on the spreadsheet and imported again - this time successfully.  Now however, we don't see what that Account ID value displayed on the form.   I have gone through the form editor to try to add it,  but I'm not seeing that field anywhere.  Please let me know how we can see it and add it to our form layout? 

Thanks