How to hide activity column in Purchase Order?

Thanks for checking in with us, huiling. 
 

The option to hide the activity column the Purchase Order (P.O) is unavailable  in QuickBooks Online (QBO). With this said, I'd recommend sending this request straight to our product engineers through feedback. Sharing features and options that you would like implemented is how our engineers look for new product updates. Here's how: 

1. Go to the Gear icon at the top.
2. Select Feedback.
3. Enter your comments or product suggestions.
4. Then select Next to submit feedback.

You'll want to check for a third-party application that can help you with this one. You can check out the apps that are compatible with QuickBooks at this link: https://quickbooks.intuit.com/app/apps/home/. We can also do it in QBO by following the steps below:

1. Go to Apps on the left side menu.
2. Search for the app in the Find apps to streamline your work field.
3. Look for the app that supports the Batch Invoicing feature

For more information about how P.O works in QBO, check out the below links:

• Create purchase orders in QuickBooks Online
• Copy an estimate to a purchase order
• Bill created from purchase order has incorrect or higher amount

Do you need more help completing other tasks in QuickBooks? Please let me know and I'll assist you with some guides and other pointers. Have a great weekend.