How to make bank branch as dropdown only for few countries?

Summary:

We have a requirement that the bank branch fields will be a dropdown only for few countries, and for all others it will be a free form text field. How can we do this?

We tried the below steps but it is coming as dropdown for all countries:

1. Navigate to the Setup and Maintenance area and search for the Manage Administrator Profile Values task.
2. On the Manage Administrator Profile Values page, search for and select the CE_USE_EXISTING_BANK_BRANCH profile option.
3. In the Profile Values section, click Add.
4. Specify the level at which the profile value is to be set. Select