integrating protractor with jenkins

When i want to run specific test or suites. I run them from terminal. I've installed jenkins and configured my first free style project. I added shell command (ex: protractor conf.js --suites A --params.user =A). Everything works fine. If i want to run multiple suites i must edit my shell comand inside jenkins. Is there any workaround?, like checkboxes, so i can check wich suites i want to run. Also i want to know about extensible parameters. I want to select wich parameters i want to run. Instead of puting command protractor conf.js --params.user=oneuser I want to be able to choose it from GUI.

Thanks for help

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