Is there an automatic way to replace tab and images, instead of Find and Replace in Adobe Indesign?

I am writing a textbook with Adobe InDesign that has optional sections. These sections have a tab then a flag at the right end of the tabs. I am wondering if in the TOC, how should I treat the TOC prior to refain myself to Find (the tab and image) and Replace (to styled text) at each updates of TOC?

This is the example after treatment.