Links permissions

I am having trouble getting one of my users to be able to add a dependency
to a ticket. When she tries to add a “Depended on by” to a ticket, she gets
a “Permission denied” error. I’m looking through the rights and I can’t
seem to find one relevant to adding links to a ticket. I’m sure I’m just
overlooking a very simple right, but I can’t seem to get this figured out.

Thanks a bunch,

Jonathan Reeder