My accountability partner in the UK just had this problem. He was doing every single task and was wanting to scale out of the minutia. Here's what I told him, there's three simple steps to begin the transition:

Step 1 - Build the systems. Are the systems currently done by robot and automation (can we convert to robots and automation if the answer is no?) or humans?

Step 2 - Right People Right Seat (read Four Obsessions of an Extraordinary Executive) - you want to get the right personalities on the bus. I recommend you go with Culture Index or Predictive Index to bring in the right people (I can help you here if you need)

Goal: Hire top performing personality based sales, management, engineer and design talent.

Step 3 - Implement people in role. Invest time into them so they are very comfortable in role, can excel at role. Exit out of task and system.

Step 4- Repeat next system & task

I'd love to help you out and give you a free demo on Culture Index. You'll be amazed on how it identifies the best talent. Call me and let's demo your current contractors and employees.