What I did is just installed the skeleton over my already installed Grav Core.
You can however install the Skeleton in a fresh location and grab the plugin separately and install it. https://github.com/getgrav/grav-plugin-admin
If you have installed it and have it running locally, you could theoretically upload the entire Grav-directory and run it directly without the need of direct access to GPM through SSH. Probably have to manually delete everything in the cache-directory and tweak system.yaml, but other than that the Grav installation process does not need to adapt itself into the new environment.
Thansk OleVik. I’m developing locally (XAMPP) and uploading works great.
A truly portable CMS!!
When you have no remote connection to the server it is a tremendous help to use the Admin plugin to install other plugins and their dependencies.
I hope the development of the Admin Pro plugin is on track!