you can make the end-users machine as Resource PC(Place the ResourcePC BAT file in the startup folder) and create BAT files to trigger their respective processes.
Users have to update the BAT file with relevant details like- Connection name, Process name, machine name, etc., and just do a double click on the BAT file, the process will start within seconds, this can be done whenever they want to run on Adhoc basis.
Below is the sample