How do one withdraw coin from mining site.

[Ota4gab]

How can a coin mined be withdraw fromthe mining site or the app ,a lot of this coin mined does not have any withdrawal button in thier app or site so how can one now withdraw the coin that one have mined.
DOes it really mean that a coin mined can not bewithdrawn,some don't have withdraw button and no support to message that can assist one in withdrawing the mined coin,what do you think is the est way to get the coin of the app or off the site