Select ‘Settings’ from the menu in the left sidebar, and select ‘Bitcoin Network Free Policy’ in the dropdown menu that appears. Choose one of the options offered: “Priority”, “Normal”, “Economy”, or “Super Economy”. These options include different miner fees. The higher the fee you choose, the faster your bitcoins will reach the bitcoin address they were sent to.
Open the menu by clicking the icon in the top right corner of the main page, and select ‘Settings.’ Under the “Miner Fee’ line item, you can select your preferred transaction fee. “Low prio” incurs the lowest transaction fee, which increases incrementally with the “economic”, “normal” and “priority” options.