[galaxy-dev] Non-admin tool install/import

Hello, We have a centralized Galaxy installation for out cluster which can be used by many users (backend interfaces with HTCondor to run jobs). Is there any way for non-administrator users to import/install their own tools so that they may use it in their workflows (under a subsection called "unstable", for example? Ideally, without having to restart the Galaxy daemons whenever a change is made. It would be fine if these tools are not visible to other users till the administrator says so. Thanks, Karthik