How to Edit New PAge Templates in Upfront

Hello.

I am going to install upfront for a client. I will modify Spirit to fit my client's needs. However, after I finish editing everything to look completely different, there still is a problem with the old dsign.

When I add a new page, there are some tempalte options. Those template remain with the Spirit design. Maybe the global header and footer is not Spirit's anymore, but the rest is.

I would like to know if any of the following can be done, and how:

a) Rename those templates (my client speaks spanish)
b) Edit the layout for those templates
c) Add more templates
d) Remove existing templates

This will be very helpful for me.

Thank you!