You’ve edited the editor, and indeed I made some mistakes.

1. Under communication section, the sentence after edited is How would you evaluate his/her judgment skills in knowing what to say and when to it while maintaining confidentiality? Is this sentence correct? 

No. How would you evaluate his/her judgment skills in knowing what to say and when to [say] it while maintaining confidentiality?

2. In this sentence, How would you rate his/her skills in build positive relationships with team members? Are you trying to change it from to build up to in building? 

Again, I am not sure if this sentence is correct after edited. Could you please also explain the difference between to build up relationship and in building up relationship? 

I’m wrong again. How would you rate his/her skills in [building] positive relationships with team members?
I don’t think in any sentence that you need build “upâ€ as you cannot build “down.â€

And: 
•to build [a] relationship or to build relationship[s]
•in building [a] relationship
•in building relationship[s]

3. In this sentence, How would you rate his/her ability to plan store promotions to increase store traffic? What is the reasoning when you remove aiming off the sentence?

A plan is an aim. All sales plans are aimed at increasing store traffic (to say the obvious, no plan is aimed at decreasing sales). "Aiming at" is therefore redundant with "plan."

Thank you for being such a careful reader. If at any time you have any questions, please ask me.

Jackson