Row Seciurity Level

Hi, its my first time for using forum, i hope you can help me guys. I have a problem with makings indywidual row seciurity level for my report. I wanna show to defined RSL users values for whole company in total and details for theirs departments. Till now only way which works for now is when i use DAX filter [department] = "name of department" but this way doesn't show others data in total which i need to show them. I cannot do this in two different reports, they should have possibility to compare their departments on the total of company.