There is a Suggestion that fits what you're trying to do that you can find at JSDSERVER-3387: As an admin, ability to specify which columns show in Service Desk requests page.
Please take a look at the ticket and if you agree that the request matches vote on the issue and add your use case to the comments. Once you do that you'll be notified of any updates to the ticket.
Hi @Katya Godneva,
Atlassian added a simple option to the native Requests page. You can read about it here. It's a basic.
For more demanding customers, we've recently released My Requests Extension for Jira Service Management. I'm a product owner of this app. It provides a dedicated Requests view which allows to display more information to your customers. List of all supported fields you can find in our documentation. This list is still expanding! Re-arrange columns, sorting, exporting etc. are available. We're working also on filters functionality (the same like in the server version).
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