# Getting started with flow controls Flow controls in Pushwoosh Customer Journey Builder allow you to define the logic and structure of your customer journeys. These elements help manage how users progress through paths based on segmentation, behavior, availability, timing, and more. Use them to personalize user experiences, control message delivery, and enhance engagement. ### Condition split The Condition Split element divides a journey into branches based on user segments or tag values. This allows you to direct users along different paths and deliver targeted content to each audience group within the same journey. ### Wait for Trigger The **Wait for Trigger** element pauses the journey until a user triggers a specified event or set of events. ### A/B/n split The **A/B/n split** element enables testing of different message sequences to determine which performs best. Use this element to optimize content delivery and improve conversion outcomes based on real-time performance data. ### Reachability check The **Reachability check** element evaluates whether users can be reached via push notifications or email. Depending on the result, you can route users through alternative channels to ensure message delivery. ### Time delay The **Time delay** element holds users at a journey step for a specified duration. The delay can be fixed or based on specific times, dates, days of the week, or dynamic values from user tags or event attributes. ### Update user profile The **Update user profile** element modifies user Tag values either manually or dynamically based on event data. ### Audience sync The **Audience sync** element sends users from a journey step to a selected Meta audience. You can add users for targeting or remove users for suppression. ### Exit The **Exit** element marks the endpoint of a journey.