When you place a library object into a Teamwork project, the placed instance of this object is automatically reserved by you: you can graphically move or delete the object.
If the object file is located in the Embedded Library, then you can also reserve this source file, independently of any of its placed instances.
To reserve an embedded object, go to the Embedded Library in Library Manager. Select the object file and click Reserve.
You now own the source file of the object: you can modify its parameters (use File > Libraries and Objects > Open Objects). Your modifications to the object’s source file will be reflected in all placed instances (after Send & Receive), even those not reserved by you.