Big Bubble in LEGO Star Wars Skywalker Saga

When first arriving in the city of Gangan City, it is impossible to solve the puzzle (for example, in the first episode). You will need different characters to access each area that has a big bubble lock hidden in it. Complete all 9 episodes, each of which will take 1-2 hours, and then return to the beginning of the game to solve a few puzzles and side quests.

There are 4 locks in total, each in one of the bubbles surrounding the big bubble.

1. For one of them, you need to climb the stairs and use the Scavenger to slide to another bubble, where you have to lower the switch.
2. Another bubble requires the Jedi to trick the Gungans into moving them aside. The astromech droid must then interact with that location.
3. The third switch requires the Jedi to open the door from the outside using the Jedi Force.
4. The last switch does not require much effort. Break all the objects, open the door and go to it.