In order to avoid cost overruns and schedule delays, project scheduling is essential for all construction projects. The critical path approach is the way of scheduling that is most frequently employed (CPM). The resource allocation problem (RAP) approach is introduced since CPM ignores resource availability and only considers time as a constraint. When there are more resources needed than there are available, RAP occurs. However, in order to solve the RAP, the resource levelling problem—an additional issue—must be addressed (RLP). RLP resulted in numerous labourer hires and terminations. Numerous solutions to the RAP and RLP problems have been proposed by researchers from around the world. By using ELS and the minimal moment method (MOM) to solve the resources problem, this research intends to give an integrated methodology and analogical model for planning a building project. Also, the levelled resource histogram utilising MOM and the search for symbiotic species are compared (SOS). The use of a case study for validation is discussed, along with a comparison of the two methodologies.