To change your personal collection, specifically to set a different sphere of interest that you chose during registration, click on the profile icon in the top right corner of the application.

In the opened window, find the section "My Selection" and click on it.

Choose the sphere of life in which you want to manifest your desire, click on it. When the label turns pink, and a checkmark appears next to it, click the "Manifest" button.

Confirm your choice again and click the "Let's Fix it" button.

The app will calculate your choice and replace the main sphere of your desire.