How do we get access to all algorithms

According to this support post: https://ez.analog.com/dsp/sigmadsp/w/documents/5164/faq-developing-custom-algorithms-and-or-using-3rd-party-algorithms
I need to "Contact an ADI engineer on EngineerZone for access to Analog Devices algorithms not included in the standard SigmaStudio installation", and that "A list of algorithms (including 3rd party algorithms) can be found here: https://www.analog.com/en/processors-dsp/sigmadsp/products/sigmastudio_algorithms/fca.html";
When I check this link, there are algorithms like Flanger and Vocal Chorus (listed under ADI Algorithms), that I would like to investigate, however, when I search for them in SigmaStudio (I'm using the latest - version 4.5 build 1779), they do not show up under the ADI Algorithms section for the SigmaDSP I am looking at. Maybe they are somewhere else, but I have searched all through this DSP's algorithms, and not found them. In fact, I have searched though the ADI Algorithms listing for all the SigmaDSPs and not found Vocal Chorus or Flanger algorithms.

How can I get access to these algorithms?