How do I enter a depreciation?

I have purchased office furniture and would like to declare it as a business expense, but I believe I also need to depreciate it. How do I enter this?

When I click on ‘new depreciation’ under Expenses>Depreciations, I am taken to the expense summary.

Should I then enter (1300 euro total amount / 10 years =) 130 euro as an expense? Will this then appear in my depreciation summary?

Do I have to depreciate this cost or is it not required?