Open Report in Qlik Sense
First the Administrator must setup the Qlik Sense Server URL and Enable it in the Open in Tool tab of the Qlik Sense model within Manage > Repository or Manage > Configuration:
Then users have access to the Open In Tool capability at various locations such as:
An individual sheet:
which opens that sheet in the app on the Qlik Sense server as follows:
If you start at the app level
then you can then go from the Qlik Sense app to any sheet: