Ability to Associate Timeline Entry to a Call to Action without having to be in the CTA Timeline tab

In order to have a Timeline Activity associate to a CTA, a CSM has to log the Timeline entry from the CTA Timeline tab. It would be nice if CSMs were able to associate a Timeline Activity to a CTA from the C360 or global Timeline as well. The current functionality leaves room for error when a CSM is used to entering activities through global or C360 timelines, but may want to associate the entry with a CTA. If this happens, the CSM would have to copy or delete the entry and re-enter via the CTA Timeline tab in order for the associate to be made.