This is an old revision of the document!
https://www.youtube.com/watch?v=c2stvB979Cg
This FreePBX add-on module is for provisioning phones.
Prepare the TFTP folder:
chown -R .asterisk /tftpboot chmod 775 /tftpboot
Install the EndPoint Manager module:
Admin → Module Admin → Check Online → PBX End Point Manager