If you want to replace a specific exercise within a section, there's no need to delete it and add a new one, which can be overly complex. Instead, you can easily achieve this by clicking on “Swap Exercise.”

Locate the "…" button situated at the top right corner of each exercise. When you hover your cursor over it, a pop-up option window will appear. Click the "Swap Exercise" option. It will take you to the "Swap Exercise" window, which functions the same as the exercise picker. Simply click on the desired exercise, that exercise will be swapped with the one you picked.