how do i change the default gl codes for gst and hst in quickbooks online

Hey there, ekinakin.

Thanks for reaching out to the Community for support. Making sure you get the support you need is important. With that being said, I recommend reachinhg out to the support team outside of the Community. They'll be able to view your screen to better assist you. You can reach them by following these steps:

Schedule a Callback: click (?)Help in the upper right > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback.

If you have any further questions, please feel free to contact us here.