In the first step we created in Bundles the Directory /Software.
Then started install files Microsoft_Office_2016_Volume_Installer.pkg with destination /Software/ Microsoft_Office_2016_Volume_Installer.pkg. Permissions were 644 and Ownership root. The file were only copied if it did not exist.
Third step. Because the Installation of the Package did not start, we launched executable: /Software/ Microsoft_Office_2016_Volume_Installer.pkg as root.

The Directory was created and the .pkg file was copied into the /Software directory but the installation did not start.