Need a computer tech on-site at a senior living community 2-3 days/weel

I'm in need of an experienced computer technician for on-site assistance in a senior living facility on a regular basis. The primary tasks will involve troubleshooting network connectivity issues, as well as some software installation and updating. The users will typically have a lower level of technical expertise, so the technician must be able to explain complicated technical concepts in an easily understandable way. This job will involve approximately 3 days/week, with possible future scheduling changes depending on the need.