Organizations that implement BPM are constantly trying to improve and effectively manage their business processes. Taking into consideration that every business process involves a reasonable amount of social interactions, i.e., simple or complex collaboration between people that occur internally (within organization boundaries) and externally (as suggestions, feedbacks to consumed services or products, and other interactions); it is necessary to provide means for incorporation of social interaction into business processes. While the need of incorporation of social interaction in business processes is well recognized, there is a lack of simple supporting guidelines for supplementing traditional business process development approaches with incorporation of social software. Iterative and incremental social software integration approach proposed in this paper provides a set of methods and concepts that are organized across well known iterative incremental development approach. The proposed approach can be used as guidelines in social software incorporation into business processes for introduction of social interaction.