Good Morning Sandra.
I have a somewhat formal statement on this.
Sorry, but this kind of functionality, needs to be implemented in the Catalog package as such.
And then, for situations like this, where you ask for a change of behaviour of the current release of the product, I can propose to add an Idea in the Communities.
So, as to this case, I encourage you to open an Idea in the CA Service Catalog Community.
To get your Idea voted for and reviewed by us there after.
For us to see whether it is possible to get this functionality implemented in a future release of the product.
Thanks in advance for your understanding and kind regards, Louis.