There are different ways to run an automation on miniExtensions, depending on your use case. These options can all be found under the Run section of your automation configuration. Some automations do not have a Run section, since they work in a different way (e.g. Embed charts, CSV Exporter etc).
In the Run section, you'll see the following options (click each link for further details):
Option 1: Process Individual Records
Option 2: Process Records in Bulk
Toggle Test Mode
Run automation (manually)