Tracks that should be played as an ordered group
This is what the “Grouping” field is for. For all tracks in a group, enter the same text in the “Grouping” field. Then choose Controls → Shuffle → By Groupings — note that this setting is only in the menu bar, not in the Preferences!

With that setting, any track whose Grouping field is not empty will be played together with other tracks with the same Grouping, presumably in track number order.