Object Properties Menu - Where?

Support Basics & Interface
1

Dear Blender experts. I’m looking for the menu that pops up when you add a new object.
For example, when I add a sphere, I have on the left side a menu with its properties (‘add sphere’ menu),
where I can edit segments, rings, etc. of the said sphere. Now, if I select another object in
the scene, and then want to go back to this menu to change the sphere segments for example,
the menu is gone and I can’t seem to find it. I hope my question was clear and I thank you sincerely for the answer.

swene

2

Now, if I select another object in the scene, and then want to go back to this menu to change the sphere segments for example, the menu is gone and I can’t seem to find it.
You won’t find it. It is only available when you add the object.

3

I thought it was so. Once you go to edit mode, you can’t go back. Thanks for the answer.