instrument grouping not correct (my error)
OS: Windows 10 (10.0), Arch.: x86_64, MuseScore version (64-bit): 126.96.36.1998021803, revision: 3224f34
somewhat late in the day I have decided to add a 4th tpt and a bass tbn. to a score. The instrument grouping however is not now looking correct. The 4th tpt looks to be part of the Tbn section and the bass bone is not with the rest of the Tbns. How do I correct this please. It might help if I knew the correct name for the staff lines that group instruments together but for the life of me, I can't remember what they are called.
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