Biomolecular condensates are mesoscale structures that form and dissolve in cells under the influence of concentration gradients of driver macromolecules and active processes. Condensates provide spatial and temporal organization over cellular matter, ensuring control over biochemical reactions such that they occur at the right place and the right time. Our work has shown that the process of phase separation coupled to percolation (PSCP), which is an example of a coupling of associative and segregative phase transitions, provides the thermodynamic basis for describing the phase transitions that drive and regulate condensate formation. This talk will highlight recent insights that have emerged from the application of PSCP type descriptions for understanding the phase behaviors of macromolecules with sticker-and-spacer architectures that are known as associative macromolecules.