Setting Up Multisite Subdirectory Redirects htaccess

I have a general question about setting up multisite redirects. I'd like to properly redirect all my multisite subdirectory sites using the .htaccess file. What is the best practice for accomplishing this so that each site redirects properly?

Also, is there a multisite redirect/htaccess resources page/section available to assist me with this? I've searched and haven't been able to locate any. Thanks for any help you can provide.