Create widgets you want to have on your site.
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After you create all widgets go to Widgets and choose Edit widget settings. Merging widgets is always done in the settings of the main/default widget.
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Next, go to General and Merge widgets.
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Click on Add rule button.
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Decide which widget will display.
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Then you create rules.
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Select the address of the subpage where you want the selected version of the widget to be displayed. Save.
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Then, click Generate code, copy the code, and paste it onto your website.
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