Scenario One: Removing People or Objects from Existing Photos
Client Request: "We LOVE this staff photo but Karen has left the company. Can you take her out of the shot?"
Photoshop is an awesome and powerful tool but it's only as awesome and capable as the digital artist who uses it. When placed in the hands of an experienced graphic design artist, entire bodies can be removed then filled in, as though they were never there to begin with. Removing Karen requires clipping and moving bodies, then drawing in the missing parts–far from a simple fix!
Weigh Your Options
Technology has made it possible to do some really amazing photo edits but just because something is possible, does not always mean it's the most cost-effective and practical solution. Moving forward with a request like this will be time-consuming, if done well and unconvincing if done poorly. For this particular photography problem, your best solution is likely scheduling a re-shoot, using the magic of Photoshop and your graphic design team as a back-up plan.