Remove options in CRM Web Client UI (Search dropdowns)

Hi all

I posted this in the Solution Manager area but it's probably best served as a CRM Web Client UI question.

Basically, we are using Change Request Management (ChaRM) in Solution Manager 7.1 and are only CRM Web Client UI.

In the search boxes in CRM Web Client, it shows ALL transaction types. I only want the dropdown to show the transaction types that I want.

For example:

In the above image, I want to remove all the S* transaction types (such as SDHF, SMHF, SDTM etc)

How do I do this?

Thanks!!!

Shaun