Hi @Toyo,
Welcome to the Bunnings Workshop community, it is fantastic to have you with us.
It should just be a case of following the instructions included in the set and inserting the pieces into each other, inserting the bolts and tightening the nuts.
Were the instructions not included in the set?
I am happy to reach out to the manufacturer or one of our stores to get a copy of the instructions if you require.
Let me know what you think.
Jacob
