Marks sign dont show with other plugins that already have some type of signe

[barcell1]

like in this picture, i would like to mark the heading as mark b, im used to jump in the most important ones, but since already have a sign there, it dont show (so i can sometimes be lost if already marked one) if not possible to make a fix for it,s there a way to the mark a or c, show the heading name on the list ?