Welcome to the community.
Cerebral palsy (cp) is a very diverse condition that impact on each individual in a way that is specific to them. Many people with cp have specialist seating needs so individual assessment to find the correct wheelchair for them is very important. Incorrect seating may result in complications later on.
I agree with the advice stated above by @PippaScope but if you want to post more about the specific circumstances it might be possible to give more targeted advice. Alternatively, if there are things that are personal and private you may prefer to take advice from the Scope Helpline staff by emailing [email protected]
Jean Merrilees BSc MRCOT
You can read more of my posts at: https://community.scope.org.uk/categories/ask-an-occupational-therapist