After setting up D0RunII (see "Choosing a release"), the run II binaries may be found in the directory $SRT_PUBLIC_CONTEXT/bin/$SRT_SUBDIR.
This will be on your binary search path.
If you have a local release area, then the local binaries may be found in $SRT_PRIVATE_CONTEXT/bin/$SRT_SUBDIR.
The environmental variable SRT_PRIVATE_CONTEXT is defined to be the current directory (.) when D0RunII is set up. If the d0setwa command is issued, the variable is assigned the absolute path of the directory from which the command is run.
The local release binary area is also added to your binary path. Binaries there take precedence over those in the public release area.
If you have not run d0setwa, then local binaries will only be found if the local release area is the current directory.