Gleantap

Make separate dynamic segments for:

1. Child1_birthday in the next x to y days
2. Child2_birthday in the next x to y days
3. Child3_birthday in the next x to y days
4. Child4_birthday in the next x to y days
5. Child5_birthday in the next x to y days

Then, make another segment that combines all of them, or simply select all 5 of the above segments when setting up the campaign. To combine:

• Segment is in segment(s) [select all 5 of the above segments from the dropdown]