Skip this if your head is already spinning, multi-select lookup fields won’t end up being THAT important.
Sometimes it’s easier to create your own single lookup module. For our Affiliate use case, we could create a “Referrals” module.
Sometimes it’s better to create your own linking module, rather than using a multi-select lookup field.
However, that’s very advanced, and is generally only done when you’re creating records through Deluge scripts from CRM or another Zoho app like Creator.