I am trying to create a smart group for contacts that have **activity** added by specific person.

**Advanced search** allows me to search either
(1) for contacts based on some activity;
(2) for activities based on **who** has added the activity.

But unfortunately not for contacts based on who has added the activity.

**UPDATE:** (Tested on CiviHosting demo site.)

Advanced search parameters:

- Display Results As: **Contacts** 

- Basic Criteria - Complete or Partial Name: **Errol**

- Activities: **(*) Added by**

**RESULT:** Search returns **Errol** as the only result, not all contacts whose activities have been added **by Errol**.


[![enter image description here][1]][1]

  [1]: https://i.sstatic.net/5G4Hk.png