Salary structure for private limited software company - Whether we can provide DA?

Dear sir I wish to know the salary structure for IT- private limited company and what are all the leaves we can avail per year?
How we have to calculate Basic, HRA, Conveyance, Other Allowances from Gross Salary. Whether we can provide DA for IT companies?

For salary part see https://www.citehr.com/581960-query-...omponents.html
For leaves see https://www.citehr.com/583857-leave-...ml#post2353612

Hi,
1.Salary Structure:
Basic+HRA+Conveyance+Medical+Special Allowance=Gross Salary
Calculation:
Basic : 50% on Gross
HRA: 40 % on Basic
Conveyance Allowance: Flat 1600
Medical Allowance : Flat 1250
Special Allowance : Left out of Gross
2.Types of Leaves : Casual Leaves(CL),Sick Leaves(SL),Earned / Priviledged Leaves(EL / PL).
3.Generally in IT industry we don't consider DA in Gross.
Regards
Chandana Hyma