Can I switch between invoice templates for different customers?

Welcome, Michelle! I'm delighted to have you here today. Let me provide insights about switching invoice templates for different customers in QuickBooks Online (QBO).

Yes. You can pick a template to use when tracking your customers' invoices. Moreover, the system allows you to switch between invoice templates. Here's how:

1. Sign in to your QBO account.
2. Go to the +New icon, then click on Invoices.
3. Click on Customize, then pick the template you want to use. You can also modify the current form by clicking on Edit Current.   
4. Fill in the invoice details.
5. Save the transaction.
6. Replicate the same steps to switch between templates.

Additionally, you can manage your invoice forms through the Custom Form Styles window. From there, you can add a new style, edit the existing ones, or make a template as default. 

I'm adding this article as your reference: Customise invoices, quotes, and sales receipts in QuickBooks Online. The same material explains how to customize the information, appearance, email message, and templates within your QuickBooks Online invoices, quotes, and sales receipts.

If there's anything else you need help with while working on your invoices, notify me by leaving a comment below. I'm just a few clicks away to help you once more. Have a good one!