Setting a deposit limit lets you control how much money you add to your account...

https://www.4shared.com/office/ahs48gxbku/pdf-74611-89669.html

Setting a deposit limit lets you control how much money you add to your account each day, week, or month. Many sites let you pick a limit as low as £10. It’s a simple way to keep your gambling within a budget you’re comfortable with.