Replace validation drop-down

Columns C and D use validation drop-downs to figure out the time to place in Column E .  This has turned out to be a somewhat confusing process that I am hoping to simplify.

I would prefer to replace the drop-down validation of both columns with a single column that allows the UTC offset (such as -5 or -6) to be input manually.  One would simply 'type' instead of 'select' the number +6, -5, +3 or whatever manually, and the time could populate properly.

The sheet is editable by anyone and assistance is greatly appreciated.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

I have removed the Validation.

You can also do that by Highlighting the column and then clicking on the menu Tools~~> Data validation and then click on "Remove Validation"


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
rtod2Author Commented:
Thank you Sid but just removing it renders the sheet useless.  I was looking to get rid of Column D entirely 'replace' the drop-down validation with an manual procedure.  Entering a + or - value would adjust the time as needed from the UTC time.  Assistance is greatly appreciated.
This formula will get you the time zone if D14 is the +6, -5, +3 column. You could make the column grey so people can tell not to type in it.
rtod2Author Commented:
Would you mind showing me an example?  Deleting either of those two columns causes an error.  I do not want the multiple columns suggested.  Only one is fine.  I only want to input the +2 or -2 and have the time populate.  
rtod2Author Commented:
follow-up on the way
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.