1. Add community members
There are two ways:
First, open community chat box, and select "Members" in the drop-down menu of "Manage".

Then please click "Invite":

Select members you want to invite and click ">>". You can add more than one member. When you finished, please click "OK":

If no approval needed from the contact, he/she will be added to the community directly. Otherwise, your request to add this member will be required. When the member approves your request, he/she will be added to the community. Meanwhile, a system message will show in the community chat box.

Second, right click the community and select "Invite". Or select Management > Members:

The rest steps are the same with that of method one.

2. Manage community members
Please go to "Members" as below and select a certain member. Then click corresponding button.

3. Clear community guest
If you want to clear all community guests, please go to "Members" and click "Clear Guests" button. Press "Ok" on the pop up window. All community guests will be deleted from your community.

Note: only community owner and Admin can manage community members.