Breakout Rooms - Using in Sequence vs All At Once

My use of Zoom is as a group meeting with occasional individual meetings with attendees. The number of attendees is less than 10. The meetings are set up as recurring meetings. I do not need to use the break out rooms at each meeting, or with each person. Can the breakout rooms be used one at a time? I have set up break out rooms for each person for all meetings, but don't know if I can meet individually, one at a time. Is this possible? Thanks.