The username can only be set once at first login, and cannot be changed after.
You will get a prompt to set your username the first time you log in to the platform.
Please know that you cannot edit your NOSH username.
STEPS TO SET USERNAME
Click on the settings icon on the app's dashboard.
Click "User Profile + KYC".
You can go ahead to set your username in the provided box. This process can only be completed once on your end.