How can I clear default status?

“To clear default status, please:
1. Enter “”System Settings”” and find “”application””;
system-settings-1
apps-2

2. Find “”APUS”” in the list of installed applications;
find-apus-3

3. Tap on the APUS icon and then find and tap on “Clear default”;
open-by-default-4
clear-defaults-5
Next time you press the home button, you can select other launcher as default.”