For example, this screenshot is taken from our popular theme Sahifa:
As you can see under (Page Attributes >> Template) you can choose from a list of page templates that are included with the theme, for example (Authors List, Login Page, Best Reviews, etc…)
If you do NOT see this panel, look to the top right of your screen for the words – Screen Options. Click that and enable the checkbox next to Page Attributes.
In case this page template has any options, you will see these options under “Sahifa – Page Options” box.