Because we only take very few dogs we are generally able to get them out frequently. We have a secure garden area and 5 well fenced paddocks. 

WE LET DOGS OUT OF THEIR ROOMS 3 to 5 times a day for free running and play wherever possible. This is dependent on the weather and the numbers we have in. At the very least they receive 2 good sized walks in the day and we let them out for a play in the garden as often as we can. We also let the dogs out into the garden last thing at night. (weather permitting !)
All dogs have access to covered outside runs during the day - except if we consider the weather too inclement - and also during the night in warm weather.

We do not exercise dogs together unless they are from the same family (or by request) and only if we have suitable dogs to run together.