Please find some chair yoga videos that you may be interested in.
https://grokker.com/yoga/video/chair-yoga-neck-and-shoulders/5244e214e7e0c02a2202071d
https://grokker.com/yoga/video/chair-yoga-restoration-for-the-lower-back/524a0858e7e0c02a22105677
https://grokker.com/yoga/video/chair-yoga-guided-rest-and-relaxation/5244c394e7e0c02a2201945d
https://grokker.com/yoga/video/low-impact-chair-yoga/56e11c4ce77a17793cada9e6

Please find our Workday Workout program that have 10-12 minute videos that could also work before a meeting.
https://grokker.com/fitness/program/workday-workout/5e4425b61702ac0c36da5467