Yes, this is possible. Apologies for the delay. What you need to do is add a condition that your group must be off. Similar to the “Do not disturb my scene Formula” in Hue Labs, this will prevent your motion sensor from activating if the lights are already on. Make sure to add this to all your automations with the Motion event only.
For more details on the motion sensor setup see: Set up motion sensor with different actions depending on time/day
Let me know if you have any questions.