The goal of the project is to extend the software library, created inside a related project, with additional functionality required for performing topological operations on GERK areas. The library will represent a core of the software solution for application of subsidies in agriculture. Company S&T Hermes Plus d.d. is developing this software solution for the Agency of the Republic of Slovenia for Agricultural Markets and Rural Development (AAMRD). The additional functionality will incorporate limiting the polygons input inside the boundaries of GERK, computing the intersections between the input polygons and those polygons, representing the OMD areas, and automatic void filling inside the GERK area by the software-created polygons.