Debian10 create users, user groups, switch users

#  New user group 
groupadd hausers
#  Create a new user and join the user group  
# -m  Create user home directory automatically  
# -g  Join user groups 
# -s  User login shell
# -d  User home directory 
useradd hauser -m -g hausers -s /bin/bash -d /home/hauser
#  Set the password 
passwd hauser
#  Set user permission sudo
/sbin/usermod -aG sudo hauser
#  Switching users 
su -l hauser