Elpost Shiplab for Magento / Additions / Configuration Scopes
Configuration Scopes are the best decision for setting configuration for each store, direction, and country.
* Screenshots are clickable
The scope needs to add step by step. The first is "Create Scope for Store", the second is "Create Scope for Direction" and the third is "Create Scope for Counties"
You want to use Cash On Delivery for France only. Then you select the scope "France" in configuration