Basic User to System Administrator

I am following the ESG Portal Application Tutorial (https://academy.appian.com/#/online-course-player/07769a88-b0b5-44ee-a08b-8f2200355f87)

However, during Step 2 when I create a Portal and go on to create a Service account, I am simply unable to access the field. Furthermore, I cannot publish the portal that I created. Why is this?

I believe it might be because I am a basic user instead of system admin but I do not know how to switch and give myself the correct permissions. Please help!