When logged in:
Go to your account
Go to the menu option
Select 'My Account'
then go to 'Gambling Controls'
You will then see an option to 'Set a Limit'
Once selected, you can choose a limit period (time) and a limit amount
You can choose to set the following limits:
Max Wager (Casino)
Max Wager (Sports)
Deposit
Withdrawal
Session limit
Loss limit (Casino)
Loss limit (Sports)
Wager limit (Casino)
Wager limit (Sports)
Please note that any decreases to your limits will be implemented immediately, however any increases to deposit limits have a 24-hour cooling-off period before being implemented.