My company tracks time by project, but on occasion we have a task that we need to do for multiple projects, and to save time we would like to assign this task to all the appropriate projects. However, we don't know if this will result in the time being double counted. For instance, if an employee spends 10 minutes working on a task for project A and tracks the time there, and then spends 10 minutes working on the same task for project B, would both project A and B list the time spent on the task as 20 minutes, resulting in a total time of 40 minutes? If this is the case, what can be done to prevent this?