Drawing objects and pictures

What is an object

My slide looks too busy with all the objects on it, can I hide them on it

How do I select an object

My object is too big, can I make it smaller

Is there a way I can get a Flowchart shape on my presentation

Now that I have some objects on my presentation, can I make them a different size

How can I draw a line on my slides to call something out

Can I change a freeform vertex

I need to move an object on my presentation according to exact measurements