Members are all the users registered with the church and can be viewed from the Groups & Members page.
You can view all current members and also invite new users by clicking on the Invite Member button as described in the section below.
You can invite members by going to the Groups and Members page and clicking on the Invite Member button on the top left corner of the member list.
After entering the email of the user, they will be sent an email with a link to register to the church and once completed they will be registered and will be able to log into the church.