Finding my work iphone

I have just talked to customer service in regards to my lost work iphone. It has the Find a Phone app and it is enabled. I am having problems trying to figure out how to access that capability as my personal phone does not have that capability. I believe my phone is in my house because I am sequestered due to our virus situation and my newly cancer dx and treatment but I think the sound is off and the battery is probably done. If the locator simply shows my house, it is of NO help. Therefore, I am hoping that you can intervene here and help fast track this situation.