while; at the same time; incidentally ~
Expresses doing something incidentally while taking the opportunity to do another thing.
This pattern is used when you do one action as a convenient occasion to do another, often with a nuance of politeness or formality. It is equivalent to saying 'while doing X, I also do Y' or 'taking this opportunity to do X, I do Y'. The action expressed by かたがた is the main purpose, and the other action is secondary but done at the same time. It is quite formal and commonly found in written language, business letters, or polite speeches. In conversation, you would rarely use it; instead, you might say 'ついでに'.