I suggest you read every bit of information here, as it can all help, especially the Medicine Cat apprentice section.

Warriors-
If you are a warrior, and want to be promoted to senior/medium warrior, you will be promoted, eventually.
Requirements*
-Have at least 3 1/2 of continuous activity (all)
-(to be promoted to senior) Must have had an apprentice for 1 whole month.
-Must have deputy and leader's consent and approval

Apprentices-
To be promoted to new warrior,
*Requirements
-3 1/2 months of continuous activity or more
-Must be approved by mentor, leader, and/or deputy
-Must show an understanding of FandomClan (a simple made up quiz, must get 3 of 4 correct)

Kits-
To be made into an apprentice,
*Requirements
-4 months of continuous activity
-Leader's consent

Medicine Cat Apprentices-
A medicine cat apprentice can only be promoted to full status when the medicine cat steps down. But, like traditional clans, they can share most responsibilities.
If the FandomClan account is made (as mentioned in the previous chapter), the medicine cat apprentice, after 3 months (or longer, depending) will also have access to the account, alike the medicine cat, leader, and deputy. *This may not be fully accurate, as we will be accpepting admins through forms. 

Also, if the FandomClan account is made*
I, the leader, will sort out duties to the deputy and medicine cat (possibly med. cat apprentice) for FandomClan, such as writing down characters, holding gatherings, etc., all things I am not able to do and such.

P.S. What's your opinion on getting a FandomClan account? Have any questions?
If you are medicine cat, med. Cat apprentice or deputy, and feeling you cannot take o the responsibility of being an admin for FandomClan, please resign and tell me in the comments below. I will give you a position that better fits you (of your choice).