Can I limit the selection of a drop down list to one of each item per user?

[Deleted user]

Each department prioritizes their Top 10 issues each week.  We use a custom field with a 1-10 drop down list.  I would like to limit each user to one of each selections at a time, so someone doesn't put in ten #1 priority issues.  Is this possible?

[Deleted user]

Each department (represented by 1 user each) selects their top 10 items for the upcoming week.  Right now, I have no way to keep them from choosing ten #1 priority items.  I want to limit each user to only be able to select 1 of each value on the dropdown list.

Here is What I get now from one user:

4 - #1 priority items

2 - #2 priority items

3 - #3 priority items

1 - #4 priority items

Here is what I want to get:

1- #1 priority item

1 - #2 priority item

1 - #3 priority item

1 - #4 priority item

1 - #5 priority item

1 - #6 priority item

1 - #7 priority item

1 - #8 priority item

1 - #9 priority item

1 - #10 priority item

Can I limit each user to only using one item off of the list at a time?

[Marc Jason Mutuc]

I would work on it via workflow conditions. And perhaps several fields. Otherwise, you should try using calculated fields from the JIRA Miscellaneous Custom Field (I think) add on.

[Joe Pitt]

The question is confusing. Are you asking to limit each user to select 1 option from a multi-select field or have a different list for each department?