At first please follow through the steps how to activate the ViFit® Connect Activity Tracker for the very first time, like described here. After that there are two possibilities to set up and personalize your ViFit® Connect Activity Tracker.
Via VitaDock®+ App:
Start the VitaDock®+ App and press the menu icon at the upper right corner. Under "Personal Settings" you can set your personal values like for example height, age and gender. If you open the device list and select the gear symbol next to the ViFit Connect Activity Tracker you enter the device settings, here you can set weight, step goal, stride length.
Via VitaDock® Online:
You can get the instruction to that here.