I am looking to apply for a Multiple entry visa for my partner who is Nigerian. We have successfully applied for two visa's to Portugal in the last 5 years. Rather than having to go through the process each time I was hoping to see if I could apply for a multiple entry visa to any of the Schengen countries.
He has a status of indefinite leave to remain in the UK.
I would imagine this is all possible but I am unsure of the process. Who do I apply to and where can I get more information on the costs/restrictions and any other considerations before I embark on this.