Task process doesn't send email

Hi,

I’m a beginner of creating K2 workflow. My boss gave me a task which is creating this workflow (figure 1). I am using K2 worksapce’s website. I have already put the email address which is the same as in the setting (figure 2). But I didn’t receive any email after deploy this workflow and submit the form.

I’m following this website but I cannot do this part due to I don’t have figure 3.

https://help.nintex.com/en-US/k2Training/K2FiveLeaveRequestBasic/Default.htm#Tutorials/Build/LeaveRequestBasic/15TestLeaveRequestApplication.htm%3FTocPath%3D_____17