admitted
The past tense of admit is admitted.
The past tense is had.
have in past tense is had
The past tense of have is had.
The past tense of 'spell' is 'spelled'. 'Spelt' is also used in British English.
"Admin" isn't a verb in English. Perhaps the word should be "admit". If so, admitted is the past tense of admit.
You spell the past tense of settle like this: Settled
The past tense is traveled.
The past tense is hoorayed.
The past tense is roped.
The past tense is coasted.
The past tense is benefited.