You need to be careful about this. If you are able to do regular part-time work, then you may no longer meet the criteria for Disability Allowance.
However, if you find work that is of a rehabilitative nature, then you may apply for permission a CE scheme. It is important to recognise the distinction, and it is a very fine line between being able to do rehabilitative work and losing your entitlement altogether.
However that said, in the current climate you are unlikely to get permission to do the CE scheme from a Disability Allowance payment, as there has been a shift in focus towards those on the live register. If they refuse your application for permission, you can ask for a review of the decision. But also, don't be surprised if your claim for Disability Allowance is reviewed also!