How to make a redirect in htaccess to a specific url?

Question

Apache HTTP Server

There is a .htaccess file in the root folder of the site. There are also two folders control and view. How to make it so that when entering a specific url, the request goes to the first folder to the main.php file, and in all other cases goes to the view folder. (if in a simple way, then with a certain url there is one working folder, and with the rest another)?