Any tag added to a lead in Follow Up Boss that is also enabled in your Integration's Target Options will trigger the integration to create or update a Transaction in Sisu:
There is also a feature on the integration called: "Store SISU Transaction on FUB". If enabled, this feature will allow for a link to populate on the Follow Up Boss lead under Custom Fields. This link can be used to take you to the corresponding transaction in Sisu.
*Please note: this link only appears when a tag is added to the lead in Follow Up Boss