I had that post to complete... still late on it.
But its very simple... you head to https://tribaldex.com/distribution
And then search for the desired distribution, click on details to expand the respective distribution and then a "Deposit" button will appear that allows to add any hive-engine token to it:
Note: The process of adding is non refundable and not possible to reverse, and because the distribution was created for 5 years, it will be distributed daily across that time.