To create a holdback, you can start in the Inventory section of the app. Click Add New, and create a Liability of the type Tax Holdback.
Then, simply add the associated value, and create a name for the holdback. When you generate asset lists or accounting reports, the holdback will be factored in.
If you are still having difficulties, please create a support ticket by emailing firstname.lastname@example.org, or wait for a response if you've already created one.
If you've created a support ticket but solved your issue using this article, please let us know by responding to the follow-up email.