@chaosboi,
You can’t do it using the settings, but you can add this code to your theme’s functions.php file or in a new plugin.
function change_ims_checkout_label( $gateways ){
if( isset( $gateways['enotification']['name'] ) && $gateways['enotification']['name'] == 'Checkout' )
$gateways['enotification']['name'] = __( 'Bank Deposit' );
return $gateways;
} add_filter( 'ims_gateways', 'change_ims_checkout_label', 20 );