Forwarding domain to another URL

I'm coming from ~8 years on Plesk, and there it was simple to create a new account/domain and (rather than host it) simply forward it to another URL. When adding the domain, it gave you the options to physically host or forward, where you entered a URL. I've reviewed the article on "popularproduct.com to forward to mystore.com/products/popularproduct, but can't find the best/easiest way to do this...?