Changing Modifiers
Zellij uses two different modifiers to distinguish between two main sets of actions.
The Primary Modifier (default: Ctrl)
This modifier is used to access the different modes (eg. Pane and Tab). Its exact usage depends on one's preset.
The Secondary Modifier (default: Alt)
This modifier is used for common shortcuts (eg. Alt n to open a new pane or Alt f to toggle floating panes).
Rebinding Modifiers
Other than manually configuring keybindings, modifiers can be changed without overriding the current configuration through the Configuration screen, accessible with:
Ctrl o+cin the default presetCtrl g+o+cin theUnlock-Firstpreset
For the Unlock-First preset, one can change the Unlock Toggle entirely.
A note about multiple modifiers
While it's certainly possible to change these modifiers to Ctrl Alt, Super or even Ctrl Shift Alt - these all require the usage of a terminal emulator which itself supports multiple modifiers. Examples include: Alacritty, WezTerm and foot.