What nation have you based the league in? If it is a European nation the rules of that nation apply, ie if it is based in Wales you get 1 champions league spot and 4 Europa League spot, if based in England 4 champs spots, 4 Europa - but you can change this........
To make any nation (In Europe) have 4 Champions League Spots and 4 Europa League spots simply open the editor, select nation, open England, write down the Reputation and ALL the EURO Coefficients figures, then select the nation you wish to change and put the info you copied in the relevant place, viola, your nation now has the same euro qualification as england.
If you have created a new top division, it may not work, i can't remember, but i think i had issues with that in the past, if thats the case, you need to use an existing top division as your top division ie, Principality Prem, Barclays Prem, SPL etc
hope that helps you