In order to turn on HTTPS on your App Manager instance, you’ll have to right-click the node → Properties, or just double-click your node.
You will now see the properties and different tabs for configuration for the node. Click WebServer.
Click the Enable HTTPS checkbox. Save (Ctrl +S / Enter / Click the Save button )
Now make sure the Restart WebServer command is selected and click Execute. Upon a successful command you will get a success green pop up.
You can now browse to https://<your ip>:<your port> to utilize the https protocol. The current http session will be up for up to 60 more seconds or so. Further browsing to it will not be allowed from other windows, browsers or sessions.
You can turn off https, by unchecking the Enable HTTPS checkbox, and restarting the webserver again.