Press Insert Event > Special.

Command Description
Run Sequence Run a sequence on the selected ME and keyer. This allows you to run a dissolve or wipe and still run a sequence in the same ME. The sequence you want to run must be loaded before running the custom control. If you are using a Relative Custom Control, you must select the PGM/PST ME as the ME to run the sequence on. You do not need to have SEQ selected on the Transition module.