Simply run the Arma 3 Tools package on Steam and select ' Prepare virtual P: Drive' from the Steam launcher or Play Arma 3 Tools, select P: Drive (DevP) then default.
Licenses Licensing: Bohemia Interactive End User License Agreement See also: settings.ini, FuturaToP Additional information How to use it By default, Arma 3 Tools path and Arma 3 game path are used. Options: You can change the paths used by DevP.bat by defining your own paths in settings.ini or editing the registry key 'HKCU\SOFTWARE\Bohemia Interactive\P Drive' (but, not recommended).
The same could be done even without P: drive but would require higher skills and more time. Basic information Author: Bohemia Interactive Compatibility: Arma 3 Download: Part of Arma 3 Tools package on Steam Description Description: P Drive is a set of simple batches to prepare a substituted P: drive ready to use Buldozer in Object Builder and Terrain Builder, this has been added based on popular demand.