I followed these steps:

now I get this:

systemctl status tftp-server.service
× tftp-server.service - Tftp Server
     Loaded: loaded (/etc/systemd/system/tftp-server.service; enabled; preset: disabled)
     Active: failed (Result: resources)
TriggeredBy: ○ tftp-server.socket
       Docs: man:in.tftpd
        CPU: 0

May 20 08:27:27 VMWare.lsi.com systemd[1]: tftp-server.service: Cannot add dependency job, ignoring: Unit tftp-server.socket has a bad unit file setting.
May 20 08:27:28 VMWare.lsi.com systemd[1]: tftp-server.service: Got no socket.
May 20 08:27:28 VMWare.lsi.com systemd[1]: tftp-server.service: Failed to run 'start' task: Invalid argument
May 20 08:27:28 VMWare.lsi.com systemd[1]: tftp-server.service: Failed with result 'resources'.
May 20 08:27:28 VMWare.lsi.com systemd[1]: Failed to start Tftp Server.

this is my file after removing start arguments:

 more tftp-server.service
[Unit]
Description=Tftp Server
Requires=tftp-server.socket
Documentation=man:in.tftpd

[Service]
ExecStart=/usr/sbin/in.tftpd /tftpboot
StandardInput=socket

[Install]
WantedBy=multi-user.target
Also=tftp-server.socket

STill does not start.

What are the correct steps for setting up TFTP .

Thank you.

Jerry