Prompting tags in a chat title?

Hi, as many of you already stated, it would be great to have a feature to search the conversation titles.

In addition to that, it would be great to prompt the title to include keywords or tags.

I tried to add this to my custom instructions:
-If the topic is about 3d Printing or Design add “[3D]” in the conversation title.
but it gets ignored no matter what.

Is there any other way except manually editing to influence the title generation?

Cheers F.