You want to change the location of the build log directory from the default build_logs directory to a different location.
Modify the /conf/accelerator.properties, ACCELERATOR_BUILD_LOGS_PATH value. The default value is build_logs in the installation folder. However, you can change it to a shared drive if the process running the server service has proper privileges to write files to that folder.
You can find version-specific configuration notes via https://docs.cloudbees.com > ElectricAccelerator > Your version > "Changing Log Location" keyword search.