To put the task in a specific folder in Wrike, separate the folder name from the task name with a double colon in the title line of your new wave.

If the folder exists in your Wrike workspace and is shared with someone, the task will be shared in Wrike with those people. The task also will be shared with the people you add to the wave, if these people already have a Wrike account. All the comments, or “blips” in Google Wave terminology, you and your team members add to your newly created wave will be turned into task discussions in Wrike.

If the folder does not yet exist, Wrike creates it under "My Folders" and puts the task in the newly created folder. Unlike the newly created task, the newly created folder is not automatically shared with your team members who are added to the wave. Read how you can share a folder in Wrike.