When sharing a request with suppliers, we recommend adding a deadline for response. This way, you avoid requests from other companies being processed first because they do have a deadline. Of course, you also want to give suppliers enough time to do a thorough screening. In practice, companies usually give suppliers a week to present qualified candidates. This deadline can of course be adjusted during that week depending on the number of candidates presented and their quality.
See also: How soon can I expect a proposal?