Logic Pro X Where did the Flex Marker Plus and Minus buttons go?


I'm still working primarily in 9 for a lot of good reasons. That said, I'm realizing that Logic X rearranged a lot of furniture.

Can anyone tell me where the Flex Time marker threshold went? It used to be in the waveform editor. There were plus and minus buttons to add or subtract flex transient markers based on threshold. I can't seem to find any information about this anywhere.

Help appreciated. Thanks.