There are a number of pages for settings on Roll20:

• y My Settings-tab inside Roll20 games, found on the Sidebar
  • individual to each player, to manage things like video/voice settings, change display name, toggle if sheets are popped out or not, turn on/off dice roll sounds or 3D Dice etc.

• Page Settings, inside Roll20 games, found form the Page Toolbar seen by GM
  • Used for managing Settings for individual pages of a campaign, such as changing the size & scale of maps, turn on/off visual grid or if snap-to-grid, changing Dynamic Lighting settings(if the game has access to them) etc.

• Game Settings Page - for managing campaign-wide settings
  • Settings like as what character sheet & i Compendium is used in the game, if players are allowed to import characters from their Character Vault, and default settings for your tokens.

• My Account (app.roll20.net/account/), settings for your account
  • things like the default display name on your public Profile, subscription & payment settings, what language Roll20 & character sheets are shown, and more.