Making a new jira board private

[Matt.Sutherland-Patman]

Hello.

I'm spinning up a new team to manage a new ATS contract.
We've begun the procurement process and are starting to build a backlog or requirements.

One of the bidders is our current provider, for obvious reasons i need to ensure they do not have access to the new board.

I've created a new board and tried to ensure that only a few can access it. I've run a few tests and so far everyone can access it.

I've followed advice from posts that I've found in this community, but I've been unsuccessful.

Please help.

[Nic Brough -Adaptavist-]

"increase value field" is not a JIRA Suite Utilities function (and it's a post-function, not a validator - you don't change data in validators).  I suspect you're missing one of the other utilities (Misc workflow extensions?)