Hi there Orange and welcome to the forum.
One of the features of a Debt Relief Order (DRO) is that once it is set up you do not make any monthly payments to your creditors. However if your circumstances change while the DRO is in place meaning that your disposable income goes above more then £50 a month, the whole DRO will fail and you will be back to square one owing all of your debt.
You therefore need to bare this in mind when deciding whether or not to get a job while your DRO is still running. If the job means your income will rise significantly and your DI will go above £50, it might be worth not taking a job until after the DRO is finished and your debts have been written off.