Select > Activity Settings > Map > Map Visibility.

Map Visibility Mode

Auto and High Contrast have preset values. You can choose Custom to set each value.

Zoom Levels

Sets map items to draw or appear at or below the selected zoom level.

Text Size

Sets the text size for map items.

Detail

Sets the amount of detail shown on the map. Showing more detail may cause the map to redraw more slowly.

Shaded Relief

Shows detail relief on the map (if available) or turns off shading.