Admin Access Flags on a CS 1.6 Server

Access flags – both for  users.ini, and for all versions of fresh bans and similar server management scripts.
a – this flag grants immunity (against a person with flag a, server commands kick, ban, slay, slap cannot be used; they cannot be kicked for flooding, high ping, and so on).
b – slot reservation, usually given to respected server players.
c – amx_kick – access to the amx_kick command. Allows you to kick players.
d – amx_ban and amx_unban commands – access to the amx_ban and amx_unban commands. Accordingly, the admin can both issue and remove bans.
e – amx_slay and amx_slap commands – this flag grants access to the amx_slay and amx_slap commands. Kill a player or “jostle” them in the air.
f – amx_map command – the admin has access to the amx_map command – changing the map on the server.
g – amx_cvar command – access to the amx_cvar command, changing server variables and settings (not all variables may be accessible). I really don't recommend giving this access to just anyone you meet. Only trusted people!
h – amx_cfg command – this flag grants access to the server settings command amx_cfg. Give it only to trusted people!
i – amx_chat and other chat commands – access to the amx_csay command, admin chat, and other chat-related commands.
j – amx_vote and other vote commands – gives the admin access to voting commands and the amx_vote command.k – access to sv_password cvar – access to the server variable sv_password (works via the amx_cvar command). This flag should also be given only to trusted admins.
l – access to the amx_rcon command and rcon_password cvar – access to the RCON password variable amx_rcon and rcon_password (via the amx_cvar command). RCON password management – do not give this flag to anyone at all except the server owner!
m – custom access level A (if your server has any non-standard amx plugins that require these access levels)
n – custom access level B
o – custom access level C
p – custom access level D
q – custom access level E
r – custom access level F
s – custom access level G
t – custom access level H
u – the admin gets access to the amxmodmenu management menu
z – regular user flag (for someone who is not an admin)

Account flags – checking access from a specific IP address or with a specific login. For example, the de flags mean that permissions are set for the IP address and the password is not checked (identification by IP only).
a – this flag prevents a player who entered the wrong password (setinfo _pw password) from joining the server
b – clan tag registration
c – the administrator will join the server only with authid/wonid values
d – the administrator can only join from this IP address
e – the password is not checked (only name/ip/wonid need to match)
Configuration of users.ini
The file  users.ini is located in the folder
/ваш_сервер/addons/amxmodx/configs/users.ini
What should a player/administrator know?
Setting the password variable for access is simple. In the server console or in your own file  autoexec.cfg enter the following line
setinfo _pw “your password here”
Instead of _pw, any value amx_password_field from the amxx.cfg file can be used
Admin account format:
<name|ip|steamid> <password> <access flags> <account flags>
or, in plain English:
<in-game nickname|IP address|steam id> <password> <access flags> <account flags>
Example administrator accounts:
; тут мы видим как прописывается аккаунт если у человека есть STEAM
“STEAM_0:0:123456” “” “abcdefghijklmnopqrstu” “ce”
; а здесь – прописка на IP
“123.45.67.89” “” “abcdefghijklmnopqrstu” “de”
; а тут – на логин/пароль
“My Name” “my_password” “abcdefghijklmnopqrstu” “a”