Installing vmm
Change into the vmm-0.5.2 directory and execute the install.sh script. The script will install all files under /usr/local by default. You could adjust the installation prefix by modifying line 8 of the script.
cd /path/to/vmm-0.5.2 ./install.sh
After executing the install script you have to edit all pgsql-*.cf files in `postconf -h config_directory`. For details see pgsql_table(5).
Don't forget to start or restart Dovecot and Postfix.
Finally run vmm configure or edit /usr/local/etc/vmm.cfg with your favorite editor. All configuration parameters are described in vmm.cfg(5) and VmmConfig.
For a short overview execute the command vmm help. For details see vmm(1).