Filter function for entering a specific date for "Deadline"

Acceptance defects that have already been recorded are recorded with a fixed date for the rectification period. According to VOB, this period is always 10 working days and changes every day when a new defect is recorded. If you use the existing filter criteria, you have several dates per week and cannot filter by a specific date, which is very unfavorable.
It would be helpful if the specific date could also be entered manually in the field.
Thank you and best regards / B. Frisch - Michael Gärtner GmbH