Using Repeaters in Custom Word Report Layout

Hello everyone!

I’m relatively new to development, and was wondering how repeaters act when trying to bring in columns from different dataitems. For example:

If I were to use a repeater by the ‘prod. order routing line’ dataitem, it would exclude the number of employees column included in another dataitem (still related to the parent) below.

If someone has a rule of thumb or any guidance on using repeaters (groupings in report builder) beyond what Microsoft provides, that would be appreciated!