We find Skype works best for all of our video conferencing. Previously we would have to dial people in manually at the time of the meeting. But recently Skype added the ability to share links to conversations which has made logistics a lot easier. I'm sure it works for PC too, but we use Mac here so the instructions are Mac-based.
- Open the Skype app (sign in if necessary)
- Click New Conversation in the File menu
- Untitled conversation now appears in the left column
- A link to the conversation is always available in the header. Click it to copy and share with others
- You can also adjust settings for the conversation, such as naming it
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