delegation functionality

@vijayk as per my understanding, if you assign a task to a group rather than an individual user, in such case anyone from that group is eligible to accept the task so in such case if one person is on leave then someone else from that group can accept and complete the Task. If this is not what you are looking for then, please elaborate with a scenario in detail so that we can understand about your requirement

@Vijayk you can use escalations, it comes with a timer event, you can configure it accordingly and , select reassign the task after that time, Hope this is what you need !

You can absolutely do this as part of task assignment (dynamic task assignment) coupled with Configuring Out of Office re-delegation process. The important point is to identify where the info about the user being Out of office is obtained from. It can be a process in Appian or integrate with a calendar utility. Once you have it, you can look for tasks assigned to the user and reassign them and also as part of rule based assignment, future tasks can also be automatically reassigned and/or exclude the user who is out of office. Having said that, Group based assignment is the recommended best practice to manage this requirement.

You may want to look at this smart service to see if the Reassign will help you. Coupled with a!startProcess you may to do something from a SAIL report showing all tasks, etc.

You can also check the Out of Office solution on Appian App Market. Link is www.appian.com/.../
It's specifically built for the usecase you are describing

Thank you all for your valuable comments..