How do I get to the section to deduct for a home office if I work for a company?

[xmasbaby0]

"I work for a company.."     If you are an employee who receives a W-2 you cannot deduct job-related expenses like a home office on your federal return.  Your state laws may be different.

https://ttlc.intuit.com/questions/4482873-which-federal-tax-deductions-have-been-suspended-by-tax-re...

If you are self-employed (and you are posting from Self-Employed software) then your home office goes on your Schedule C.

[AnnetteB6]

A home office deduction as an employee receiving a W-2 is reported on Form 2106 Employee Business Expenses.

That would be an employee business expense and those are no longer deductible on your Federal return due to the Tax Cuts and Jobs Act.  However, you may still want to enter the expenses in case your state tax return has not complied with the Federal changes.  This is true for both 2018 and 2019 returns, and all other tax years through 2025 as of now.  

For state purposes only, the expenses would be included on Form 2106.  Search for 'form 2106' at the top of your TurboTax screen to get started.  

@Retiard