Store sketch in ZW3d

Hello everyone, how is it possible to insert a Sketch inside this library as shown in the photo?
I would like to create a custom sketch so that it remains stored.
Thank you

When you create the block then close ZW does not remain for a new session … there is no way to insert it in the window as in the picture?

HI Rotolo74:
This is due to the problem of saving permissions. It will be stored in ReadySketchMM.Z3.

Please make sure that your ZW3D is running with administrator privileges.

I also have the problem with the storage.
After a ZW3D restart, the settings are all back to default.
And yes ZW3D has full access as Admi