Permissions for king put in jail with occasional access (10)

'permissions' is the definition.
(I know this)

'king put in jail with occasional access' is the wordplay.
'king' becomes 'lear' (Shakespeare's King Lear).
'put in' indicates putting letters inside.
'jail' becomes 'can' (the can is American slang for prison).
'with' says to put letters next to each other.
'occasional' indicates alternate letters (letters taken at regular intervals or on occasion).
The alternating letters of 'access' are 'ces'.
'lear' going inside 'can' is 'clearan'.
'clearan'+'ces'='CLEARANCES'

'for' is the link.