Offsetting of capital gain by purchasing assets

Dear all,

I sold my old house property and purchased a new one. U/s 54, I can offset capital gains from sale of house with expenditure on purchase of new house. However, I could not find the space in ITR 2 where I can fill these details for reporting purpose. Secondly, I retired from Armed froces last february and though the retirement benefits are not taxable, i want to show the amount for reporting purpose only.

Please help me by confirming the relevant spaces in ITR 2  where i can fill the above details.

Thanks in advance