• Your teammates see a "Help" button in the team chat when you request lives. 
• Your teammates need to tap on the "Help" button to help you with your life request.
• Teammates can help once for each life request.
• Lives are added to your lives inventory as soon as your teammates tap the “Help” button.
• After your life request bar fills, the request will disappear from the team chat.
• If the life request bar doesn't fill, your request will stay within the team chat window.
• If you request lives after 4 hours, your previous request will be replaced with the new one.

Note: Your teammates get coin rewards for each life request they help with; it is completely free to do so.