Learn English – Better Word for a “Delivery Guy”

the people is commonly used in our workplace.

Call up the people in [department name].

Someone is also used

Can you get someone in accounting to take a look at this?

Or, it's just omitted if it's a whole team:

Can you get Finance in here right now?

EDIT: I should add that if a team is all young men, sometimes the term boys is used, though this is usually used within a team and is much more casual.

E.g. The IT(sub-dept.) Manager might say to others in the IS(main dept.) team: "The boys are out fixing a problem, they'll join us shortly"

The better word is two-way or two-way street:

1. allowing or entailing communication or exchange between two persons, groups, countries, etc.

2. involving two parties or participants, as a relationship or agreement; two-sided: a two-way race for the nomination.

3. entailing responsibilities, obligations, etc., on both such parties. (dictionary.com)