There are no hard and fast rules. Issues which would be relevent would be:
(i) What the children's current relationship with the grandparents
is - what contact
were they having with the children prior to the parents separation?
(ii) What contact do the children have with each parent - how much time is available?
(iii) is is reasonable for the grandparents contact to be part f, or separate from (i.e., if the paternal gransdparents are seeking
, is there any reason why this cannot be arranged directly with father to coincide with some of the periods the children are with him, if the contact is with mothers paretns can the contact be arranged directly with mother to coincide with the time the children are with her
(iv) depending on their age and understanding, what are the children's wishes?
(v) What are the practicalities - how close to the childnre's home do the grandparetn's live? Arethe grandparetns willing and able to do the 'fetching and carrying', how good is the relationship between the parent and grandparent?
It wouldn't normally be reasonable for grandparetns to have contact if the effect of that was to significant reduce or restict the time the childnrehave with any non-resident parent, and any contact would have to be something which was considered to be in the children's best interest, there is no presumption in favour of contact although the court would consider the potential benefiot to the children of having a relationship with their extended family.