How to take screenshots for mac

Question

macOS

Hello. There is a Moom program that, among other things, can take screen shots. But on my computer with two monitors and Mavericks, it doesn't work well. It is necessary that the program windows are not minimized, and if there are windows of other programs in front of them, these windows do not minimize and interfere with viewing. That is, the very idea of ​​a quick output of casts is untenable.
I would like the program to minimize all windows before displaying the snapshot and call programs even if they are closed.
Do such solutions actually exist? Thank you.