Thank you for your question
My name is Clare
I shall do my best to help you but I need some further informtaion first
What would you like to know?
Do you mean can you force him to have the children more often?
Does he pay maintenance for the children
Then sadly - assuming that he is paying at the correct rate - that is all that is required of him.
I agree that this is not sufficient - but unless he is willing step up and do his fair share he cannot be force to do so.
You can certainly try and discuss matters with him using Family mediation to see if you can make him realise that it woudl be good for the chidlren - and form him - if they spent more time with him - but if he does not agree then there is no other action you can take.
I am so very sorry
Please ask if you need further details