The Advanced Tax module has four Group Rights which need to be assigned. See How to Edit Group Rights to adjust settings.
1. Go to 'Tools' along the top bar. Select 'System Configuration'
2. Select 'Groups' and find the group that you wish to change. Once you have the group selected, click 'Edit'. In this example we will edit the 'Admin' group.
3. On the right side of the application, you will see a list of group rights. Scroll down until you find 'Tax'. Check/Uncheck the box of the field you are trying to adjust.
4. Press 'Save' when finished.
5. Close and reopen the application to confirm and verify the settings have been updated as expected.