I tried to change some part of the keyboard via imeAction,
but can still see that this only applies to the first textfield
enter image description here

How can I solve this problem?

@Composable
fun TipTimeLayout() {
        EditNumberField(
            label = R.string.bill_amount,
            value = amountInput,
            onValueChange = {amountInput = it},
            keyboardOptions = KeyboardOptions.Default.copy(
                keyboardType = KeyboardType.Number,
                imeAction = ImeAction.Next
            ),
            modifier = Modifier
                .padding(bottom = 32.dp)
                .fillMaxWidth()
        )
        )
        EditNumberField(
            value = tipInput,
            keyboardOptions = KeyboardOptions.Default.copy(
                keyboardType = KeyboardType.Number,
                imeAction = ImeAction.Done
            ),
            onValueChange = {tipInput = it},
            label = R.string.how_was_the_service,
            modifier = Modifier
                .padding(top = 32.dp)
                .fillMaxWidth()
        )
    }
}

/**
 * Calculates the tip based on the user input and format the tip amount
 * according to the local currency.
 * Example would be "$10.00".
 */
private fun calculateTip(amount: Double, tipPercent: Double = 15.0): String {
    val tip = tipPercent / 100 * amount
    return NumberFormat.getCurrencyInstance().format(tip)
}

@Composable
fun EditNumberField(
    value: String,
    onValueChange: (String) -> Unit,
    @StringRes label: Int,
    keyboardOptions: KeyboardOptions,
    modifier: Modifier = Modifier
) {

    TextField(
        value = value,
        onValueChange = onValueChange,
        modifier = Modifier,
        label = { Text(stringResource(label))},
        singleLine = true,
        keyboardOptions = KeyboardOptions.Default.copy(
            keyboardType = KeyboardType.Number,
            imeAction = ImeAction.Next
        )
    )
}

When the user tabs the second text field, a Done button should appear in the lower right corner of the keyboard