1. Because LEB most closely follows the LHB i.e. Bible behind Logos coding, I like to use it as a basic translation in several layouts. (Or put another way, Faithlife has control over both the LEB and LHB and can therefore minimize anomalies as they know the thinking of the editors.) However, my most common preferred Bible is the NRSV which requires the LES which contains only the Old Testament. For current TIPS of the day, I also want to include HSCB which uses a shorter canon.
This worked well as in this example from Proverbs.

2. However, when I went to enter a reference from Sirach, the panel would not accept it because Sirach does not appear in the LEB but in the LES. Were I to put the LES first, the problem would move to being unable to enter New Testament references. I need to place the NRSV first because it has the greatest overlap with the other translations.

3. Rule of thumb: When building a multi-view panel, use the broadest canon resources as the first (base) resource.