In order to enable the feature, please go to Business Calendar 2 → Settings → Times and check the option → Use home time zone. Afterwards you can select your home time zone, if necessary.
When you add events while being in another time zone, these will be added to your home time zone by default.
Now you can enter your events and tasks regardless of the time zone you are in, without having to fear they will be shifted upon returning home. Happy traveling!