Before you can edit your profile in the volunteer pool, you must first have registered to the volunteer pool. This article discusses how to do this. This article discusses how to unsubscribe from the volunteer pool.
If your preferences change over time, or if you want to make changes to your profile, you can easily change these. Click on your profile icon in the top right corner and select "Profile". Then click on "Edit Profile". Here you will find all the information on your profile. If you change something in your profile, it will also be automatically changed in the volunteer pool!