Dolibarr 18.0.1 Purchase Order issue for Tax 2 and Tax 3

In purchase order tax is not calculated for 2nd and 3rd Tax. In My case, 6/6(C+S-12), 9/9(C+S-18), 14/14(C+S-28). System assigns “0” for all 2nd and 3rd Tax ( 0(C+S-12), 0(C+S-18), 0(C+S-28)…
Please see the attached screenshot.