You are likely going to have difficulty with auto focus and narrow band filters. I would highly recommend using lum filters to auto focus for all of your NB filters and applying the required offset. It will be more accurate than the sometimes janky data SGPro tries to interpret from highly restrictive filters. In addition, a lum filter can achieve highly accurate focus in a much smaller window of time. This will also give you much more freedom in scheduling.
That said, we just give advice and we don’t attempt to change your workflow… What you are asking for is not currently supported. It is something we have considered in the past (we called it Sequence Fragments), but it never seemed to have a lot of community support (relative to other things). There are sequencer changes coming soon, but Sequence Fragments was not one of the things currently planned.
I would recommend adding it here: SGPro 4.4 Backlog - Our Thoughts and Request for Community Input - Sequence Generator - Main Sequence Software (sequencegeneratorpro.com)