Kaspars, thanks so much for the prompt response.
Currently, my permalink is set to POST NAME.
What effect would changing to CUSTOM STRUCTURE, as you suggest, have on my currently named pages? Anything? Or do already named pages and posts remain intact? I’d like to know before I attempt this and possibly affect my entire site.
So currently, my CUSTOM STRUCTURE default is /%postname%/
So you’re saying change it to /%category%/%postname%/
Is this correct?