hi,
the following Account Heads can be used:
Toll Tax Paid: It can be Rent, Rates & taxes or an alternative account head would be Duties & Taxes. In the narration you can write the details of the taxes incurred.
Donation paid: Please check if the entity to whihc donation is being paid is being eligible to claim deduction u/s 80G of the Income-Tax Act, if yes then show it as donatio & at the time of preparing the return you cna claim the deduction u/s 80G. Else if the entity is eligible for claiming deduction u/s 80G then you cna show it under the head Office Expenses, so that you will be able to claim the deduction & the AO will not raise query, if your case selcted for scrutiny.
For Employee's medical expenses, you can show it under the head 'Employees Welfare Expenses'