First you should know that host stores setup per user, that is why each user has independent set of data. For the printer configuration there is nothing you can do about this.
For slicer configurations you can. In Preferences->basic settings you can change the work directory for the host which is also used for CuraEngine configuration files. In slicer manager you can also set slic3r to point to a specific data directory and not the slic3r default in AppData/Roaming/Slic3r.