Control can quickly become a bigger hurdle than delegation when you have a lot on your plate. I find that giving my team mates an opportunity to understand my concerns, conveying information about projects to me at an agreed upon internal, and a common workspace for us to share project documentation has helped loads! I don't have to worry about tasks, they get organised in a mutual location so I can always drop in and check, and I get to hear from them regularly as we make availability of top importance.

I use task management systems that provide me with a dashboard to see the status of all tasks. When delegating, I provide training videos showing how to do the task.