Follow the below steps to invite a new member.
1. Tap "More" on the bottom right corner.
2. Tap "Invite"
3. Select who you would like to send the invitation and how you would like to send it.
Invitation link works for 30 days.
※For those using version earlier than Android 3.3.0 / iOS 3.5.0;
1. Tap "feed" on the bottom right corner.
2. Tap "Invite" on the upper right corner.