1. Determine the purpose and theme of the group: Define the purpose and theme of this friendship group. For example, you can create a group of friends with hobbies as the theme, or you can create a group of friends with occupations, geographical locations and activities as the theme. This will make it easier for potential members to understand the purpose and content of the group.

2. Determine the rules and requirements of the group: When creating a single friend group, you need to formulate some rules and requirements to ensure the order and safety in the group. For example, members can be required to provide personal data before joining, or it is forbidden to post bad comments or advertisements in the group.

3. Promotion: In order to let more people know about your single friends group, you can promote it through social media, forums, blogs or other channels. Information such as the purpose, rules and activities of the group can be announced to attract more people to join.