PS > C:\PATH\TO\syslog-windebun.ps1
You do not need to have Administrator permissions to run the script, though the ExecutionPolicy has to be RemoteSigned or less strict to run.
You can check it with the Get-ExecutionPolicy -List command and set it with the Set-ExecutionPolicy -Scope CurrentUser RemoteSigned
It is possible that after you download the script to the machine, you need to unblock the file on the windows machine with the following steps:
You can also find detailed information in the README file or using the online help of the script.
Get-Help ./syslog-windebun.ps1 [ -Examples | -Detailed | -Full ]