Make a Schedule
If you are a product manager, you have a schedule for building and unrolling the product, and as a result, you get stuck up with too many tasks corresponding to the development process. But unfortunately, often the work process of the designers in an app development company deserves better flexibility.
US designers often need very rigorous focus on creating various elements, and this is why unlike product manager they cannot shift their attention between things. At the same time, designers need to make themselves available for discussion and meetings.
Make a schedule that works for both so that both the product manager and the designer can put their time and efforts on user research. Having close alignment of the designer and developer can help an app product dispelling distractions and minimising frictions.