General Skilled Migration (GSM) visas includes subclass 189, 190 and 491 which has pathways for skilled individuals to get permanent residency in Australia based on their qualifications and skills. Hence, no employers required to sponsor them. It is based on a point system. 

Subclass 189 (Skilled Independent Visa):

• This is a direct Permanent Residency given by the Department of Immigration to the skilled workers that are in medium to long term strategic skilled list. 
• You need to meet the points test criteria which considers  factors like age, English proficiency, work experience, and education.
• This visa allows you to live and work anywhere in Australia. 

Subclass 190 (Skilled Nominated Visa):

• For skilled workers nominated by a state or territory government agency for direct Permanent Residency.
• You must be nominated for an occupation on the skilled occupation list and meet the points test criteria.
• You will have to make a pledge to stay in that perticular state or territory for minimum two years from which you received the nomination. 

Subclass 491 (Skilled Work Regional (Provisional) Visa):

• For skilled workers nominated by a state or territory government agency or sponsored by an eligible relative in a designated regional area.
• This visa is granted for five years, with a pathway to permanent residency after fulfilling regional residency and work obligations of three financial year.
• You must be nominated for an occupation on the skilled occupation list and meet the points test criteria.

To apply for these visas, you need:

• An English score of at least 6 in each band in IELTS or equivalent.
• A suitable skills assessment in your nominated occupation.
• Submission of an Expression of Interest (EOI) to be invited to apply for the respective visa type.

Mission Migration assists individuals with:

• Assessing eligibility for GSM visas.
• Preparing and lodging visa applications.
• Guiding on maximizing points under the points test system.
• Assisting with nomination/sponsorship processes.
• Liaising with authorities and tracking application progress.

In summary, Mission Migration offers comprehensive support to individuals seeking GSM visas, simplifying the application process and enhancing their chances of success.