To gain access to this great feature, you need to be a CTARC member [details here] and have also taken out the annual subscription to access the Morningstar Remote Station. However, those with access to Morningstar get free access to the QO-100 Satellite transceiver as well.
Working the Satellite has a learning curve - you need to be able to ensure that activating QO-100's linear transponder doesn't transmit downlink signal on the wrong frequency! Therefore all those members with Morningstar access who would like to also us the QO-100 feature need to contact the CTARC Secretary [here] to register. She will then send you links to an instructional PDF by Tjerk ZS1J and video by Chris ZS1CDG that explain how the system works.