widgets for homepage in shortcode

Hi, i’m bulding a business webpage on this adress: https://www.suporte.redlinepctech.com, and i want to put a plug-in in the homepage text box, the plug-in is a feed reader for the testimonials, for show the last or rotate.

see this piture to undurstand better what i’m talking:

https://imagehostfree.tk/?di=0AQO

Thanks for the help.