Hi SAP Community,
Despite having configured the substitution and userSearch parameters for the My Inbox app as per the SAP Help Configure the My Inbox App documentation, the Manage My Substitutes option does not appear in the user action menu of SAP Build Work Zone, standard edition.
As per the documentation, the local copy of the My Inbox app parameters have been configured as shown below:

The HTML5 app content provider has also been refreshed/updated:

However, the user action menu still does not display the Manage My Substitutes option as expected:

Any assistance on what might be missing to enable the Manage My Substitutions option would be appreciated.
Thanks,
Mustafa.