Hi, Such small circulars you can prepare on your own. Anyway, just refer to the following:
Dear All,
All of us surely would love to have fun and games amidst our tight work schedule. Here is a good opportunity. We have placed Carrom Board and Chess Board in our office at ____. Interested employees can use them during break time between ___ am/pm to ___ am/pm.
We thank you all for your hard work and support.