Rotate Masonry Layouts

Using Masonry to display featured images from a category of posts on a static front page. I created a completely separate Masonry collection using a second set of posts from a different category.

I am agonizing over finding a way to rotate / alternate the display of the two masonry collections on the same page. For example, one set is called “Providing” which is descriptive of the services provided, the second set is called “Serving” which is descriptive of the types of businesses we serve. I would like to display the providing set for X seconds than have the Serving set displayed for X seconds.

Can you think of any way to accomplish this?

Thanks

URL: http://compuaidusa.com