If you are using the Z02-Hub or the Z01-Hub, this article should be of some assistance: Adding your First Hub
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If you are using the E39-G8C Sengled Hub, the following article should be of some assistance:
a) In this article, only the first of the three methods for setup are explored since it offers the most features and versatility: Adding your Sengled Hub E39-G8C (Works with Apple HomeKit)
b) This guide shows a quick overview of all three ways to setup the E39-G8C hub: Sengled Hub E39-G8C Works with Apple HomeKit User Guide.pdf