The next part of the course includes flying holding patterns.
Sometimes it is not possible to make the next planned step or maneuver right away: for example, due to very congested air traffic, or rapidly changing weather. In this case an aircraft can wait some time in the air. But the airplane is constantly moving through the air to stay airborne, it cannot just stop. That is what holding procedures about: how to properly wait for the next phase of flight.
The holding pattern itself does not differ a lot from the aerodrome pattern, but both the wind speed and the airplane speed is usually higher. On the other hand, there is no climb or descend during the hold.
This part of training is mainly about how to enter the pattern, and about keeping the flight parameters (altitude, speed, course) as close to the chosen values as possible.