The plugin allows you to select theme to preview and then select the users that will see that theme.
The theme can be configured, with that configuration stored from the theme so when the theme is previewed by another user it will use the saved configuration..
This plugin differs from most theme switcher plugins or Theme Customizer preview in that it allows the theme to be configured before going live.
The settings for the theme are saved, so when the theme is switched over, all the settings are in place..
Menu configuration you can place existing menus into locations defined by the theme and that will be remembered, but you cannot change the menu itself without affecting the normal site menus because they are the same content.
Choose theme to preview, then select the users that can preview or configure the preview theme...
The theme's page post CPT content is the same as the theme, so you cannot make content changes to live pages behind the scenes...
The ones that are theme-specific are separate for the theme, but any settings that are under the control of plugins can't be switched, they will be the same for the theme and the previewed theme...
When attempting to utilize with theme on WordPress, the preview worked but other users got switched to Twentysixteen default..
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
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