Conflict between an individual and a group
This is a confrontation between one person and the rest of the team. Who is this person? A black sheep, a rebel, or a tough boss-tyrant. There can be many options. For example, an employee appeared in your department who is radically different from the rest of the team. A certain part of it wanted to get rid of the new recruit: they can boycott him, weave intrigues, etc. Another example: you came to the position of a manager and faced a misunderstanding of the team.
In the first case, the conflict must be resolved very subtly and gently. If you openly take the side of the offended employee, the rest of the team may not like it. If you leave everything as is, it will look unprofessional. In such situations, all the same proven methods of team building help well. You should unite people with one goal, for example, start developing the company's mission together, and during the work process, unobtrusively indicate that no intrigues and office wars are now allowed in your team. In addition, it is necessary to communicate with the newcomer himself: perhaps he is doing something wrong and behaving incorrectly.
If you are the rejected person, then you will have long and painstaking work ahead of you. It will be necessary to inspire trust in the new team, to show your business and personal qualities. In no case flirt with subordinates and do not play the role of your boyfriend. Just do your job well and open up as a person in moderation.