Group 1 - The article discusses the process of issuing rental invoices in different co-rental situations, emphasizing that each tenant should request an invoice based on their respective rental share when multiple people rent together [4] - In cases of subleasing, the subtenant must request a rental invoice from the sublessor, who in turn must obtain an invoice from the original landlord [4] - It is important to prepare the real estate lease contract and property ownership certificate when applying for rental invoices [4] Group 2 - The article provides links to additional resources related to tax obligations for recent graduates, including health insurance payments and tax declarations for first salaries [6] - It highlights the importance of understanding tax responsibilities and the implications of rental agreements for individuals [6]