How to pause sequences

Pausing a sequence will stop emails from sending to prospects added to the sequence. 
To pause a sequence, go to Sequences -> Sequence List -> Select the Sequence you wish to pause -> Menu -> Settings -> Pause Sequence. 

By default, paused sequences will not be visible on the Sequence List. 
To see paused sequences, you can tick the "Show Paused Sequences" box.

Note: Follow-ups may accumulate if active sequences are paused for a long time. 
Check this article to find out what you can do in case follow-ups have accumulated - What happens when sequences/inboxes are paused for some time?