So, how do I turn on the Apache module?

That is the question that I can’t find an answer to. And why is there an .htaccess option on both WordPress and Apache module. What does it do? Is there a documentation anywhere except this one which is somewhat lacking:

http://urbangiraffe.com/plugins/redirection/

Cheers
Johan

https://ww.wp.xz.cn/plugins/redirection/