Add a board.txt to any project manually or using the Visual Micro Add Code menu. Then use it to override any of the build or upload properties for the current project.
Switching on vMicro>Compiler "Show Build Properties" and "Verbose" will enable the current build properties to be viewed after each build.
Network upload (Raspberry, Yun, Esp8266)
network.port=[enter a port num]
network.auth_upload=[yes if password prompt is required]
network.password=[enter a password if network.auth=yes]