Hello @LUCAS-SPIELMANN

The feature to insert the section along with the feature of changing the title is available in the pro version of this theme. Also pro version comes with other exciting feature and to know about the pro version refer below link:

http://themepalace.com/downloads/photo-perfect-pro/

Also if you have any confusion while setting up the sections you can refer to the theme official documentation which is given below.

For pro :
http://themepalace.com/theme-instructions/photo-perfect-pro/

For free :
http://themepalace.com/theme-instructions/photo-perfect/

Hope this helps.

Best Regards!!