Question regarding change set and release managment

[Yao, Li Xun (Eric)]

Question: multi developers working on different change sets at the same time 
and we want to have whichever change set pass user acceptance testing move to 
production first. We don't want to have each change set impact each other since 
some change set may need to rework several times. To do this I have to create 
branch for each change set and merge the change set back to chunk after the 
testing is completed, and then create release tag in trunk for production 
deployment. If there anyway to do it without branch?

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