[Plugin: My Content Management] How to have it rotate between testimonals in a side widget?

I’m not sure I understand your question. First, what do you mean by “rotate”? The plug-in doesn’t handle any dynamic behaviors; those need to be triggered externally. If you just mean come up with a single random testimonial, that should be doable using the sidebar widget; but I’m not sure what you mean by “getting the excerpt to reorder”, either.

Rotate meaning when they refreash the page it is a different random testimonal.

I tried adding the shortcode to a side widget and it didn’t work. Then read up on making them work by adding add_filter('widget_text', 'do_shortcode'); to the functions.php file.
That fixed it but now its all of them. I just want one.

What do I need to do?
The site I’m working on is:
https://kissaskreations.net/sites/pamharkendorff/testimonials/

Reorder meaning set a number to each testimonal to sort by instead of the order they were entered.

If you want a random item on each load, you have to choose ‘rand’ as your ordering method. If you’re using menu_order and choose a count of 1, you’ll always get the first one.

As a note, if you’re using Post Types Order to set your menu order, that conflicts with using rand as an order — that plug-in overrides other ordering.