[galaxy-dev] Adding a visualization plugin to a galaxy local toolshed

Hi everybody, I am currently working on a galaxy visualization plugin which I would like to share with my colleagues. As it stands, they devised a local toolshed where I can upload my tools and which works very well for uploading tools with their wrappers. However, I have no idea how to upload a visualization plugin so that they can directly install it from the admin menu. I tried looking for answers but have not found a solution yet. Any advice is welcome! Cheers!