In the People tab you can view a list of all members as well as use the following tools:
You can use Add Person to manually add people into your MemberHub site. However, it is preferable to use your Site Joins Page or import contact information. To manually add a person click on Add Person on the right. Enter as much information as you can and click on Add Person at the bottom. This person now has a profile in your MemberHub site.
Note: The Add People button on the People tab is different than the Add Members form in the PTA tab. The Add People button gives you a way to add people to your MemberHub site but does not mark that person as a paid PTA member. You need to visit the PTA tab and click the Add Members link to actually add new PTA members.