I’m so sorry we missed your message previously, @RayJ! Hope you don’t mind but I just came across it and moved it out from that old topic into it’s own topic so it could be addressed separately.
It’s been a long while since you’ve posted here so I expect you’ve already got this solved, but I wanted to leave a reply here in case at any rate in case it’s helpful to anyone else coming across this thread in future:
The + icon should appear just under the trigger and action steps in a Zap. For example:
If you click that + icon it will then add an additional action step to the Zap. You can learn more about how to set up action steps in Zaps here: Set up your Zap action
Hope that helps!