
5 answers

"You would need to create a custom Lookup(Account) field on the Opportunity and manually link it".
We already have a custom Lookup (Accoun) field on the Opportunity called "Parent Company" and they are all manually linked to the Opportunity.
This is a screen grab from a Parent Account that lists an existing Opportunity. I don't know how this Opportunity got linked to the Parent Account. The only button available is to create a new Opportunity which I do not need.