There are at least two ways to ‘switch’… logout of one session and log int to another. The other is to switch users. You can steal this yad file I posted if you don’t see those options on your desktop.
Mark Rabideau - http://many-roads.com
"For every complex problem there is an answer that is clear, simple, and wrong." H. L. Mencken
dwm ~Reg. Linux User #449130
20 Jan 2021 ~ "End of an Error"
As far as I know, you cannot switch user (like you can in MX with xfce) on antiX.
Instead you have to set up a new user and logout/login as a different user using Logout from the menu
(You don’t gain anything by using the app linked to by manyroads).
Philosophers have interpreted the world in many ways; the point is to change it.