Cloud Kicks has five years of sales data and would like to track when customers made their first purchase. How should an app builder use a roll-up summary to meet the requirements?

An app builder wants to show groups as the last navigation menu item in the salesforce1 mobile app. however, the app builder is not able to select groups as one of the items on the drop-down menu. What could cause this?

The organization-wide default for a custom object is set to private. The superior profile grants view access to the same object. A user with the superior profile is also listed as the manager on the user detail record for a subordinate. However, the superior still cannot view records owned by the subordinate.
What is preventing the superior from viewing records owned by the subordinate? Choose 2 answers

Which two standard Lightning page components are available in the Lightning App Builder?
Choose 2 answers

An App Builder is loading the data into salesforce. To link the new records back to the legacy system, a field will be used to track the legacy ID on the account object. For future data loads this ID will be used when upserting records. Which field attribute should be selected? Choose 2 answers