What are activities in Panaya?

An activity or task can be either a single Correction, Test, Requirement or Defect.
Each activity in Panaya has its own Priority- determined by Panaya, and Usage - determined by your custom code.
Correction activities as well as Defects also contain the complexity parameter.

See also
What does the activity status mean
How to sort and filter
How to assign an activity
How to change the status of several activities at once
How does Panaya detemine complexity and priority