Is it necessary for all the family members to be present when moving the grave? For example, if I work in a foreign country, will I not go back?

First of all, we must choose an auspicious day for "moving the grave", and the person in charge of "moving the grave" must be present, and other relatives will regard it as convenient or not. For example, when moving the ancestral grave, the person with the highest seniority in the family is the client (or someone else can be entrusted as the client), and other relatives can be absent, which is convenient and inconvenient. Another example is moving parents' graves, and the son is in charge.