1. Condition 1 refers to the the plan ID - is "PLAN_ID_HERE" the correct syntax or just "PLAN_ID"?
You replace it with the actual plan id found within CBSubs > Plans under the Id column to the far right.
2. Condition 2 would simply be the ID number of my plan... correct? "A" equals the PLAN ID number?
No condition 2 is to be left alone. It already is conditioning for subscription becoming active.
3. What is [var2&3]?
They're substitutions for the triggers variables. They are also to be left alone.
4. The action is "Join Groups"...
The action is "CB GroupJive". Under the Action tab you can configure it to join groups.
5. There are no parameters, correct?
Action parameters are under the Action tab. You can select for it to join groups then select what groups.