Link to YouTube Video:
https://www.youtube.com/watch?v=kb81L6wANAA&feature=plcp
I have had numerous questions around the control of revisions within a Revit model, in particular the use of a dual system of revision entry such as:
PRILIMINARY P1,P2 etc
FOR TENDER T1,T2, etc
FOR CONSTRUCTION C1,C2 etc
Although the Revit revision system is not perfect you can still utilise the in-built tool by making use of other parameters that are available.
It is good practice to add the revision clouds to the drawing sheet and not to the views as there are certain items that will not accept a revision. It is also advisable to only show the revisions that have occurred on the current drawing sheet as opposed to project wide.
Link to YouTube Video:
https://www.youtube.com/watch?v=kb81L6wANAA&feature=plcp
Enjoy,
LawrenceH