How do I apply for spouse visa online uk

[Kamelectronics]

I've been married for 9 months now I have everything that's required but finding it difficult to apply via online ukba I've registered and I have option apply for your self. And other option over sub options apply to remain apply to settle can't find apply for spouse visa. My wife is abroad and I'll be applying for her and online and submit relevant data to Sheffield, can any one advise it would gratefully appreciated .

[Casa]

Your wife is the applicant - Apply to settle

[CR001]

The options you select is :

Settlement
>> Settelement
>>>>Wife