An Object in Codeless One can be seen in many views, depending upon which view is enabled/supported. During App creation, user is asked to select the desired views for relevant objects.
If a user does not select the desired view for the relevant object, the corresponding view option does not appear in the Show As menu.
This does not mean that those views can not be displayed for the said object. We just need to configure the Show As menu using the following steps:
Click the App Settings Icon and then click the On button.
Click the Edit icon for the Object Toolbar to invoke In-line Edit.
Click the Actions tab.
Here you can see that majority of the views are not enabled, due to not being selected at the time of App creation.
Enable the desired checkboxes.
Click the Update Page button.
Now if the user clicks the Show As button, all the enabled views can be accessed.