vacant post will be filled first 

It would be as per the promotion rules laid down by the organisation 

it can be more than time period required as experience for direct recruitment 

Upper age  limit can be same for entry level posts as well as for direct recruitment for higher posts 

Relaxation should be for a class or a category of persons, and not for individuals. (ii) The amount of relaxation in any case should not exceed 50% of the qualifying service prescribed in the Recruitment Rules. (iii) Ad-hoc service rendered in the feeder grade should not be a main consideration for relaxation.

2) The recruitment rules or amendment(s) thereto as finally approved by the UPSC are required to he notified within . a period of ,4 weeks from the date of receipt of their advice.

The necessity of publication of law is a part of the rule of natural justice.

the relaxation of rules have to be published in official gazette 

Amended rules can be followed if posts and vacancies were sanctioned 

Query has been replied to 

No further query raised 

The promotion policy of central government, state government, Public sector organisations, private sectors  differs from each other.

Your question is blunt without any details of where you are3 employed and what exactly is the requirement.

Presuming you are a government employee, There will be a fixed time period even after qualifying for the next promotion and the same policy applies for the direct recruitment too.

The objective of the promotion policy is to recognize and reward, merit and competence. It improves the organizational and functional effectiveness. 

Promotion should be made strictly in the order in which the names of the officers appear in the panel. 

In cases of promotion, one time relaxation in educational qualifications may be considered to ensure that the officer has at least one chance for promotion after the constitution of service/promulgation of the new recruitment rules.

The age of the candidate for Associate professor  should be between 22-40 years of general merit candidates.

The candidates who are applying for the Post of Professor can apply as per the eligibility criteria set by the University, College or Institute.

There is no upper age limit for candidates applying for the post of Assistant Professor. However, for Junior Research Fellowship (JRF), the age limit is set at 30 years

The relaxation of rules are to be published in the authenticated document viz., government gazette or by a Memorandum or OM etc. 

Once the posts and vacancies declared on a specified date, the rules prevailing at the time of pronouncement of the existing vacancies for recruitment shall only prevail and not the rules that are promulgated subsequently

Central Health Service (CHS) Officers in Central Government are governed by the Dynamic Assured Career Progression (DACP) Scheme, which was implemented by Government of India based on the recommendations of Vth Central Pay Commission providing promotion to the CHS officers without linkage to vacancies upto the level of Chief Medical Officer – Non-Functional Selection Grade (CMO-NFSG)/ Specialist Grade I/ Professor w.e.f. 5.4.2002.

A circular issued by RRB : 

There have been lot of responses flooded into this portal to all your queries. 

You may go through the responses furnished so far and revert with more queries if you have any but with proper background details.

Dear Client,

It's possible for the time period of experience required for promotion to be more than that required for direct recruitment on the post of Professor. This can vary based on the policies of the institution or university.

Procedure for Relaxation of Rules for Recruitment in a State Government University:

1. Identify the specific rule or rules that require relaxation.
2. Formulate a proposal detailing the reasons for relaxation and its potential impact.
3. Present the proposal to the appropriate authority within the university, such as the Board of Governors or the Academic Council.
4. If the authority approves, draft an official notification detailing the relaxation of rules.
5. Publish the notification in the university's official gazette or bulletin to inform all concerned parties.

It is possible for the upper age limit to be the same for entry-level posts like Assistant Professor and higher posts like Associate Professor and Professor. However, this would depend on the policies and regulations set by the university or governing body. While it's not mandatory to publish the relaxation of rules in leading newspapers, it's good practice to ensure transparency and inform potential candidates about any changes in recruitment procedures. Amended rules can be followed on 14.9.2024 if they have been officially approved and communicated by the relevant authority, even if the posts and vacancies were made and sanctioned earlier. The key is that the amended rules must be in effect at the time of recruitment or promotion.

 The decision between filling vacant Professor Posts or upgrading Associate Professor posts can depend on various factors such as institutional needs, availability of qualified candidates, and budgetary considerations. Typically, institutions prioritize filling vacant posts to ensure the smooth functioning of academic departments. However, if there is a policy or scheme in place like the Dynamic Assured Career Progression (DCAP), it may provide guidelines on the order of priority for promotions versus direct recruitment. It's essential to adhere to the policies and procedures established by the university or governing body in making such decisions.

Your queries are little vague, can be address in person consultation. 

There are separate legal solutions for each service Recruitment and promotion based on rules. 

DCAP scheme promotion is based on working experience + specialty. 
Scheme shall be made whether vacancy is available or not with some exception. 

relaxation of rules has to be publish in same manner advertisement was issued. 

Rules of game cannot be change once recruitment process starts.