Can the whole family leave after the skilled migration is completed?

Did your husband file an immigration application? If not, he can be the main applicant and you can be the deputy applicant. You can submit the materials to the embassy or consulate together, and then they can go together after the visa comes down. If the application has been submitted, did he pay your application fee when he submitted it? If so, they can apply together and leave together when the visa comes down. If you haven't handed it in, it's the same now. If your husband gets an immigrant visa, he can apply for your family reunion immigrant visa after staying in that immigrant country for a period of time.