Established in 2006, the coalition began with an initial membership 4 organizations and expanded to 6 by the end of 2008. GALCK later expanded in membership to 14 and 16 in 2012 and 2014 respectively, representing LGBQ voices from across Kenya.

In 2013, GALCK rolled out a devolution process through which to decentralize its operations and programming beyond Nairobi. This was in response to an overwhelming need to identify and address grassroots needs and concerns across the regions, raised in 2012.

This process devolved the GALCK membership into 3 regional clusters, named after the peaks of Mount Kenya, Batian, Lenana and Nelion, which essentially categorized member organizations by the regions in which they are based and operate. The cluster mechanism is intended to strengthen cohesion and collaboration within the cluster membership through a peer-to-peer approach. Member organizations in each cluster are able to benefit from the experience and best practices of their peers. Each cluster is also at liberty to articulate a modus operandi that it deemed most appropriate/suitable to carry out the movement building work.