I would request you to post the further form design related queries in the "Support" (the one designed for the same purpose) section and not in the "Development" one..! Also, whenever you get a chance, feel free to introduce yourself here to the community! 
Coming to the question, Yes, the above is possible while designing a xlsform in ODK. It is stated in here in the documentation: https://docs.getodk.org/form-question-types/#grid-of-selects-on-the-same-screen
Hope it helps!