Depending on which Optix plan you're currently on, you have a set number of Automation actions that you can use every month. All admins can see all actions and triggers, however, premium actions and triggers are only available with Automations+ subscriptions.
With Automations that is included in all subscriptions:
You can create your own Automations and view all Recipes
You can see all actions and triggers, but will not be able to run any workflows that include an Automations+ action or trigger. (See screenshot for example of premium actions).
With Automations+
You have access to the number of actions selected when upgrading your subscription
You unlock gated actions and triggers:
Changing your Users' account status (action)
Adding Invoice Items to your Users' invoices (action)
Adding Allowance to your Users' accounts (action
Manually starting Automations for select Users (trigger)