Adding settings to the Depth of Field (DOF) parameter in the camera settings

I'm not sure if there's an addon that can help me, but the Photographer addon doesn't have such capabilities. I'm facing an issue where, when rotating the object 360 degrees with DOF enabled, the focus is lost. I'm trying to blur the background in an animation of glasses rotating 360 degrees. Specifically, I have an animation of glasses where the temples open and close. But even when the glasses rotate 180 degrees, the focus remains only on a piece of the object. When the temples open, only the glass remains in focus. I've tried creating a mesh similar to glasses with open temples, but I can still only adjust the focus point precisely. Therefore, considering the problem, I would like to have a tool that fixes DOF not only on the object but also on a group of objects, i.e., on a collection. I think such a solution could be implemented. I suggest adding the ability to focus not only on a single object but also on a collection of objects.