Start new group / User to existing group
To start trackZall service GPS and battery settings of device should be properly configured. The easiest way to make settings is to answer "yes/confirm" to all the settings requests when app starts. After installed, app itself must be always started clicking the icon on the menu.
To start complete new group, select "Start new group". Then you will be the admin user of new group. The maximum group size is 50 users. The 14 days trial period is free then price is about USD 1.95 / month / group. The exact price might be vary in different countries based on taxes etc.
If there is already existing group which you like to join, then please click "User to existing group"