User Activity

What does the Discuss button and Associate Interaction button do in the HRSD lifecycle event case form view. What is the use of these UI Actions? Please Explain
I have dashboards created in performance analytics, I want to make it visible in Now Mobile App. Is it possible?
Want to add the field "Contextual Search results(type-formatter)" to my CSM configurable workspace. Already added it in the default form view, but not visible in the workspace. Also tried using Form design but no use.
I have created a button "Raise Incident", the use case is it should only be visible when the task_category (choice field) is changed to "IT Service Management".  I gave the condition in condition field inside UI Actions, it's not working.