To run commands on my machine I was getting digital signing error so I had to run this command in SharePoint Power Shell window: Set-ExecutionPolicy Unrestricted
Change the URL in the file “DeployAll.cmd” to your url
Navigate to the folder where the DeployAdd.cmd is located eg C:\Users\nsaadmin\Downloads\DeploymentSS
Enter this in the window .\DeployAll.cmd, this will install all the solution starters
Should be able to this for individual solution starters.
Note: PowerShell is case sensitive for internal commands but is not case sensitive when pointing to your custom files.