Top bar is the bottom bar of the player's inventory.

• Press R to swap the rows
• Press Shift-R to swap only the items in your hand. (Disabled by default)
• Press = to disable/enable

Hotkeys are configurable in the standard Minecraft controls settings.

Additional configuration is in the mod's menu page. ModMenu is required for the extra configuration.

Fluent mode can be enabled in the mod's config menu (using ModMenu). This disabled manual swapping using the R key, and instead does the swapping transparently as the user scrolls along a double-wide hotbar, created by rendering the second hotbar alongside the first, rather than on top.