Create a new user to SFTP into an AWS EC2 Server

AWS SFTP User

Create User
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sudo adduser <new user> && sudo su - <new user> && cd /home/<new user>

Create SSH
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mkdir .ssh && chmod 700 .ssh && touch .ssh/authorized_keys && chmod 600 .ssh/authorized_keys 
ssh-keygen -f <new user> && cat <new user>.pub >> /home/<new user>/.ssh/authorized_keys

Copy Private Key To Give to New User
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nano <new user>

Create Upload Dir && Create Group
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sudo groupadd <new group>
sudo usermod -a -G <new group> <new user> 
sudo usermod -a -G <new group> ec2-user

sudo mkdir /home/uploads/<new user>

sudo chgrp -R <new group> /home/uploads/<new user>
sudo chmod -R 770 /home/uploads/<new user>
sudo chown ec2-user:<new group> /home/uploads/<new user>

Delete User
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sudo userdel -r <new user>