Can the department at the same level ask for instructions? For example, if the marketing department wants to recruit people, should it write to the human resources department for instructions?

The departments at the same level do not need to ask for instructions;

Asking for instructions is special for superiors and subordinates and does not apply to departments at the same level.

Departments at the same level can use the "letter"

The following contents are for reference only:

(1) Letter: Issue rules or temporary regulations and use them in the writing of government agencies, organizations, company numbers, private or affiliated enterprises, companies and internal departments.

(2) Announcement: used when announcing the competent business to the public or specific objects.

(3) Memo: used for business dealings between companies, departments or departments within a company.

(4) Submit: used when subordinates ask for instructions or report to superiors.

(5) Telegram: Business processing shall be conducted by telegram.

(6) tabular official documents: tabular official documents and company personnel orders stipulated by government agencies can be printed in a fixed format and used according to actual needs.

(7) Others:

1. Judicial documents shall be executed in accordance with the procedures prescribed by the judicial department; Litigation documents shall be executed in accordance with the procedures stipulated by the litigation review Committee of the relevant government departments.

2. Meeting minutes and routine reports don't need to be sent in words.