Merge into the background
Definition 1 of 1
Pro Tip 1/3Social Strategies
Used when someone doesn't want to draw attention and prefers observing rather than participating. 
She would merge into the background at meetings, taking notes instead of joining the debate.
Pro Tip 2/3Avoid Spotlight
People who are shy or modest might use this strategy to avoid being the center of attention. 
Even though he was the most talented, he would often merge into the background during awards.
Pro Tip 3/3Stealth Observation
Someone might do this to study or learn about a group discreetly, without influencing the situation. 
As a writer, she'd merge into the background at cafes to capture authentic dialogue.