Oh my lord!!! That is so … (gritting teeth - you fill in the blank)!
Only fields on the page layout are accessible.
Welcome to professional edition. No field level security, so Salesforce decides the only way to turn on a field is to put it in a standard layout… Yes, I will fill in the blank.
PS I like the new office. Looks bright and shiny!
I wish I had a dedicated office space, but no. I was at the car dealership for service on my van. The office I was in was an unused office that I used without permission while waiting on the service to finish.