1. A custodian parent is vested with absolute power over the day-to-day needs of minor children, including decisions about schooling, residence, and upbringing, without requirement of consultation with the non-custodian parent, provided such decisions are in the children's best interests. 2. The onus is on the non-custodian parent seeking variation of custody to prove on a balance of probabilities that the custodian parent's actions or changed circumstances are not in the best interests of the children. 3. Relocation of children within the jurisdiction by the custodian parent, where authorized by consent order, does not automatically constitute denial of the non-custodian parent's access rights; the duty lies on the non-custodian parent to exercise and enforce those rights. 4. Improved employment prospects and economic circumstances of the custodian parent that directly benefit the children cannot be used as grounds to vary custody in favor of the non-custodian parent. 5. Where a consent order contemplates removal of children from the jurisdiction and requires consent not to be unreasonably withheld, speculative fears about administrative difficulties in exercising access rights do not constitute reasonable grounds for withholding consent. 6. The maternal link is particularly important for young children's psychological well-being, and courts will be reluctant to disturb custody arrangements for young children absent compelling evidence that this is necessary for their welfare.