Basic batch file to create a local user and then add it to the local admin group
net user “user1” “Pa$$w0rd” /add
net user “user2” “Pa$$w0rd” /add
net user “user3” “Pa$$w0rd” /add
echo “adding users to admin group”
net localgroup administrators user1 /add
net localgroup administrators user2 /add
net localgroup administrators user3 /add