How to install specific ROS package in Windows 10

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I installed ROS on Windows 10 using the tutorials here and here.

The installation completed successfully and I can run roscore and see the roscore topics via "rostopic list"

Now, I need to install a specific package: ros-melodic-octomap On another machine with Linux (Ubuntu 18.04) I was able to install this package with

sudo apt-get install ros-melodic-octomap

But with Windows 10, when I try to install this package I'm getting an error message (see below)

choco upgrade ros-melodic-octomap -y --execution-timeout=0
Chocolatey v0.10.15
Upgrading the following packages:
ros-melodic-octomap
By upgrading you accept licenses for the packages.
ros-melodic-octomap is not installed. Installing...
ros-melodic-octomap not installed. The package was not found with the source(s) listed.
 Source(s): 'https://roswin.azurewebsites.net/api/v2;https://chocolatey.org/api/v2/'
 NOTE: When you specify explicit sources, it overrides default sources.
If the package version is a prerelease and you didn't specify `--pre`,
 the package may not be found.
Please see https://chocolatey.org/docs/troubleshooting for more
 assistance.

Chocolatey upgraded 0/1 packages. 1 packages failed.
 See the log for details (C:\ProgramData\chocolatey\logs\chocolatey.log).

Failures
 - ros-melodic-octomap - ros-melodic-octomap not installed. The package was not found with the source(s) listed.
 Source(s): 'https://roswin.azurewebsites.net/api/v2;https://chocolatey.org/api/v2/'
 NOTE: When you specify explicit sources, it overrides default sources.
If the package version is a prerelease and you didn't specify `--pre`,
 the package may not be found.
Please see https://chocolatey.org/docs/troubleshooting for more
 assistance.

How can I install specific ROS package in Windows 10?

Thanks,

Avner