There is no need to sign in person, and the object of signature is not limited. You can also sign a trumpet of 1, so you can make your own trumpet to sign it. However, it should be noted that only non-union personnel can sign the trade union registration form, and those with trade unions cannot sign it. Of course, you can also return to the trade union before signing, but this will lose all the prestige of the original trade union, so most people are reluctant to do so. After collecting the signatures of 10, go back to the trade union registrar and give him the registration form to formally establish the trade union.