The Interactivity tab (Figure 1) contains several toggles related to showing or hiding functions. If you enable Allow Selections you'll let users select portions of the chart. You can also choose to enable Animations, and show the Fullscreen Icon (to maximize objects), and Snapshot Icon - (to take snapshots of the object).
Note: Snapshot Icon has been part of the Hover Menu since the Qlik Sense September 2020 release, and is no longer controlled using the property panel.
Figure 1: Interactivity