Run two skype (or more) instances at the same time

To run two or more Skype instances at the sae time
First login in Skype

Then open cmd and execute command

"C:\Program Files (x86)\Skype\Phone\Skype.exe" /secondary

Or in Powershell

& "C:\Program Files (x86)\Skype\Phone\Skype.exe" /secondary

For Linux users execute

skype --secondary