When you go along with a group because you don't want to cause trouble, it is called: ?

I believe the answer is: Normative social influence.

Normative social influence refers to the process of agreeing/conforming the the view held by majority of group members in order to be a part of the group. This occurrence could affect different aspect of our life. For example, we can see that many people choose to adopt all belief from one political party without wanting to listen to the views of opposition party.

debating and finalizing the detail of the policy

the telephone is the answer