What is value of "campaignId" and "channel" for ZVA API end point?

API Endpoint(s) and/or Zoom API Event(s)

Description
There are descriptions “campaignId” and “channel” where can i get these values from?

example end point - open(campaignId, channel)

When I look into campaign of ZVA there is no section for ID, however there is a name section but the name has a white space, I was not sure how it should be treated.