You are in the right place.  See where it says Customers in the list?  click on that and the Edit button will become active.  Click on Edit and you will see a long list of shortcuts to add.  Choose Create Invoices.

Resolution for 'become active issue: 'I want to pin Create Invoices to “My Shortcuts” and I cannot find it. I can pin the most useless things”, but I cannot find the most important and obvious thing.' available: Yes.

The become active issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the become active issue yourself by looking for a resolution described in the article. If it is a complex become active issue or you are unable to solve the issue, you may contact us by clicking here or by using other become active support options.

For more information about resolving issues related to become active in Quickbooks/QBO or to get support for the issue 'I want to pin Create Invoices to “My Shortcuts” and I cannot find it. I can pin the most useless things”, but I cannot find the most important and obvious thing.', click the link below: