Once you posted it, you can’t add a new photo to a status update. The only moment when you can add more photos to a status update is between the time one or more photos are uploaded and the one you click Post (see picture below).



The only thing you can do is to delete the first pictures and re-upload them together with the fourth.

(FYI: the photos you upload directly (as status updates) are grouped in the album called Timeline Photos.)

How to add additional photos to a status update
I own a four family building which I am actively renting. 

Every time I go to rent it I raise the rent slightly and I check the comparables in the area to make sure I am still not pricing myself out of the market. 

I ALWAYS get a ton of people that are willing to rent the unit and I end up having to pick one.

Is there a graceful way of doing this? 

I tend to just pick the one I think is going to be best but honestly they're usually all fine.

Can I just start a bidding war? Is this a bad practice? How do you get people into a bidding war? 
