Tax Codes in Charts of accounts

Hello everyone,

I been using MYOB for a Year or so Now.

When I have started my business in last FY, I was not registered with GST. So, I left everything as N-T in Tax Codes and charts of accounts.

In this FY, I was not expecting income to go over $75K thresold till end of december 2022. So, I left it as it is.

But Now, From 01-01-2023, I have registered for GST as I am expecting it to go over $75K. So, i have changed my settings to YES for GST.

Now, the problem is, As shown in the picture attached, in the Charts of accounts, How I should decide that, in which accounts I have to keep tax codes as N-T and in which accounts I have to change to GST..? or should I have to change all accounts tax codes to GST in the charts of accounts..??

Please provide as much details as possible. I like to learn to earn more effectively.