Is there like a Login and a Sign Up thing?

I’m not sure if I can put the Login and Log off, and sign up thing on the site editor. Does this login system exist?

The site builder does not include any login system. However, most scripts provided through Softaculous do provide such functionality.

@Admin said:
The site builder does not include any login system. However, most scripts provided through Softaculous do provide such functionality.

Thank you.