You can download software http://software.cc.metu.edu.tr.
1- run set up and choose install now (For Visio 2019: Extract ISO file downloaded from Licensed Software Page. Open Command Prompt with Administrator rights. Go to the folder that you extracted files and run below command.
"setup.exe /configure configuration.xml")
Setup will begin.
2- Installation has only two steps so choose close here
3- You can use the software from programs menu in your computer.