Modeling One Task With Multiple Owners

LiquidPlanner does not explicitly support multiple owners for one task.  This is a deliberate design decision which allows us to most accurately capture the effect of each individual contributor’s schedule.

An alternative is to break the one task into multiple tasks.  Assign each one to a different person and estimate just that person’s individual contribution.   Each person's task can be situated within their priority structure as appropriate.  This alone will give you an accurate schedule.* 

If it's important to see the combined effort of the individual tasks, you can create a folder to contain the set of individual tasks.  The folder then represents a rollup of the individual tasks, and you would keep an eye on that folder to track the remaining effort and progress logged for the entire set of work.  

This example actually illustrates the reason we don't offer direct assignment of one task to multiple owners.  Notice that Liz, Mary and Jack are available to start their contribution at different times, based on other higher-priority work on each of their plates. 

*Note: if the nature of the work in question is more akin to a meeting, e.g. multiple people will participate in a single three-hour task at the same time, please see our help article on Modeling Meetings.