You can only interact with the elements of the next task which is getting the colourful bear down from the ride which apparently broken once you have completed the target stand and collected the bear from that stand.
How this works is that all the triggers can only be activated through a compare bool and a toggle. Basically the game is asking whether you have picked up the first bear, if not then you can't activate the next task. You only know where the next task is or something you can interactive with through the placements of blue gradient indicators.
The indicators will appear and disappear depending on whether a task is completed or you have just interacted with something.
If you don't find the spanner and bring it back to the control panel, then the same piece of dialogue will continue to repeat.
When you have found the spanner which is hidden in one of the tea cups you can walk up to it and pick it up. This illusion is done by having a trigger linked to a toggle hidden which will hide the object when you reach the radius of the trigger. The trigger is also linked to a open gfx which will open an image onto the screen of a spanner.
When you approach the panel after collecting the spanner the image will be removed and a model of a spanner will appear on the control panel. A matinee sequence will be triggered which will give the impression that the ride is coming down and with the bear on it.
When the matinee is over the bear on the seat will be hidden and another one will be unhidden indicating that you can go pick it up.
When you walk up to these bears a sound will be triggered to let you know that the bear has been picked up and an image of the bear will appear on the screen. Showing you which bears you have collected.