For the two themes, Sydney and Virtue, neither have the option in the page attributes to select Geodirectory as a template.
There is no need for that, just select default or whatever your theme provides. GD V2 uses your theme’s templates.
If the case, are you saying to create a widget area?
No, just use the normal sidebar you use for your theme.
If so and to avoid coding, I have used a plugin Custom Sidebars to create a widget area. I have called this GD Sidebar. I have selected this as a sidebar on the GD Details page.
There is no need for that.
I turned off the GD Sidebar you created, and added to new widgets to the theme sidebar: GD Author Actions and GD Output Location.
Have another look at this link: https://wpgeodirectory.com/docs-v2/geodirectory/getting-started/#sidebar-widgets
Let us know.