Own Production is not necessarily visible in the menu from the start. You make it appear by customizing the menu and turning on the Own Production menu item. To do this, you need admin access on the project or the organization.
How to show Own Production
Click Customize at the bottom of the left menu, and select Customize menu.
Find Own Production in the list of menu items.
Click the eye icon next to Own Production so that the menu item becomes visible.
Feel free to move the menu item with the up and down arrows to where you want it.
Confirm and save. Choose whether the change should apply to the project or to the whole organization.
Good to know
If you save the menu at organization level, all projects in the organization get Own Production in the menu, unless a project has its own menu setup.
You can also add Own Production under Favorites at the top of the menu so you find it faster.
If you don't have admin access, ask an admin on the project to turn on the menu item.