The ‘Main Menu’ is opened when the game starts. I’ve added an IsInGameLevel boolean (to false) there from the sequence node that is already present.
The ‘Play’ button opens the game level, I’ve set that IsInGameLevel to true.
In my ThirdPersonPC, I have added a branch node, then off False, I have set an IsInGameLevel as false.
The ‘Pause Menu’ still shows up though when I press the ‘Gamepad Special Right’ button.
(I’ve attached the changes I’ve made based on your suggestions)