There are two different ways you can set your timing increments in a sequence; a Smart Pause or a Custom Pause
A Smart Pause gets automatically added between each email template within your sequence. A Smart Pause is the time between each email sent and is dynamically adjusted based on email opens and clicks to optimize each campaign. Smart Pauses are typically 2 to 10 days long.
If you would prefer to set your own email timing increments, you can click on the gear next to the Smart Pause and switch your timing to a Custom Pause. When using the Custom Pause, you can control the exact day of week and time, based on the timezone set for each of your reps in your Contact Settings Tab, that you'd like your templates to send.