Clicking on Relationship line should highlight it permanently

Is there a way to highlight a specific relationship line as it only highlights when the cursor is moved in the line but disappears when the cursor is taken down?
Clicking on the line should highlight it.
If not, I request the creators to take this feedback into consideration.

At the current, we only support highlight the relationship by hover on it or highlight all relationships via the “Highlight” toggle.
We’ve well noted the idea & will consider on it.

Okay Sure. thank you for considering it.