How To Upload Logos, Fevicon, And Background Image?

Dashboard -> Appearance -> Theme options -> General Settings

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How To Do The Slider Settings?
Dashboard -> Appearance -> Theme options -> Home Slider Settings

You can add ten slider images to the Slider Section that will display one by one with vertical scrolling.
Form the slider settings only, you can insert a text in a slider, and provide a short description to each slider image differently.

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-> Click ‘Save All Changes’.