DD should just be between you and your partner with nobody else including your children finding out. If you have very young children DD can continue nearly normally but with more discretion in clothing choices when they’re awake etc.

Also use DD to your advantage to make your partner get more involved in things like diaper changes. Babies need many more but a fair solution can still be you change their diaper (2-3 times a day) as long as they do the baby’s (6-10 times a day). 

As your children get older many couples will step back their DD to suit their new situation. Remember if your partner is ABDL they can’t just turn it off but they can turn it down. Maybe switch to enforced diaper wearing in the evenings and in bed.

Children are very nosey so make sure your DD supplies are out of sight and hard to access. A locked suitcase(s) is a simple but effective solution.

If you’re yet to have children then we urge you to take the opportunity to get involved in DD more heavily while it’s easier to do so. Your partner will thank you for it and you’ll have a stronger relationship when starting the mammoth task of raising kids.