This has to be covered somewhere but I can not find a direct response. After I get my main domain loaded with WP Multisite and follow all of the directions on how to set it up for sub-directories, I should be ready to add domains (e.g., domain.com\site1.com and domain.com\site2.com). Since it is not setup yet, I can not go to super admin and see how it is done. So the questions are:
This has to be old, but will I need some type of domain mapping plugin?
If so, which ones are currently rated the highest?
When someone goes to site1.com or site2.com in their browser what do they see as the address and content?
Will they see any reference to domain.com?
After I get these additional sites added, how does SEO programs, google, bing, etc. rate
having my additional domains listed or tied to domain.com?
One last question. Does my WordPress installation have to go into the root directory?