Changing Instruments and Tempo within the Same measure

So I've been using noteflight for the past couple years, and there's some features I really want. So the first request is self explanatory. So Usually, when I want to change, say an Oboe 1 to an English Horn, I would create a separate line for the English Horn, but I do not want to print a separate part. It would be nice to have multiple instruments on one line. The other request is to have intermeasure tempo changed, as Zachlew stated here. https://support.noteflight.com/hc/en-us/community/posts/49157256338708-Change-tempos-within-a-measure