If you are thinking of hiring or using the MUGA or Playing field, this is what the government says regarding participation in sport and physical activity in groups of more than 6.
When playing sports informally with people you don’t live with, you must limit the size of your group to 6. It is illegal to do so in a larger group and you may be fined.
You can continue to take part in organised sporting or licensed physical activity in groups of more than 6. These activities either need to be organised by a club, business or charity and/or involve someone who has received an official license to use equipment relevant to the activity. In all cases, the organiser must conduct a risk assessment and ensure compliance with COVID-19 Secure guidance. You should only be playing team sports where the relevant governing body has published guidance on how to do so safely.
When participating in organised sport or licensed physical activity, you must not gather in groups of more than 6 before and after the activity. You must also ensure you socially distance from people you do not live with (or have formed a support bubble with) wherever possible.
You can find more information here.