You can't take the home office deduction for expenses related to your salaried job (i.e., that you receive a Form W-2 for), but you can claim expenses related to your self-employment income.
Please see the TurboTax FAQ "Can I take the home office deduction?" below for details on the deduction, and the TurboTax article The
Home Office Deduction for more details on the types of expenses you can claim.
https://ttlc.intuit.com/replies/3302005