Can I still enter deposits and expenses manually?

You've came to the right place, @marym2. I'm here to help you enter transactions in your QuickBooks Online manually.

Good news is that you can still enter transactions manually in your account. Recently, there was an update that gave the Plus icon ⊕, or the Create button, a new location. You can find this on the left menu in your account as the +New button. You can find more information on What's new in QuickBooks Online with the link I have provided. 

Now that we've located the new icon, we can proceed on how to enter a Bank Deposit with the steps listed below:

How to Create a Deposit:

1. Click the +New button.
2. Select Bank Deposit.
3. From the Account drop-down▼ menu, choose the account you want to deposit the money into.
4. Enter where the funds were Received from, the Account, Description, Payment method, and the Amount.
5. (Optional) You can add the Ref no. if it needed.
6. Hit Save and close or Save and new.

I've provided a link on how to Record and make Bank Deposits in QuickBooks Online. Now we can move on how to create an expense. Below I have listed the steps that need to be taken in order to create this type of transaction:

How to Create an Expense:

1. Click the +New button.
2. Select Expense.
3. In the Payee field, specify a vendor. You can type in the name of the person or a business. If your transaction covers multiple petty cash expenses, leave this field empty.
4. Choose the Payment account to which credit this expense.
5. Add the date of the purchase in the Payment date field and specify the Payment method.
6. (Optional) You can use the Ref no. field to enter an identifying number from the purchase receipt. 
7. Enter the Description, the Amount, and any Tax.
8. Hit Save and close or Save and new.

Here is some more information on how to Enter, edit, or delete expenses in QuickBooks Online. It's that simple! 

If you need any more assistance, I'm here for you. Have a safe and great rest of your week.

how can i override the gst and put in a number different than the one automatically calculated?

Hi Jussie. You're posting in the US Community, and since you've mentioned GST, it sounds like you're a Canadian customer. We have our very own Canadian QuickBooks Community, which is great because the two products can be quite different between our two countries. Here's where you should reach out next time: Welcome to Canada's QuickBooks Community.

In the meantime, I'll chime in here to help. 

When you enter deposits and expenses, the GST will calculate based on the percentage associated with the tax code. This depends on the province you're operating in. You're able to manually adjust the amount of GST by editing the box found at the bottom of the page beneath the Subtotal and the Total. 

I hope this helps! 

Cheers.