Once Author submit his/her paper, the review of the paper will come within 7 to 10 days. then he/she have to send his/her article processing charge within 14 days. then his/her paper will be published within 1 week.
so typically it should take 1 month from submit to publish unless the paper require major edit/ changes.
Yes, but author have to inform us earlier. other wise, within maximum 21 days his/her paper will be automatically rejected.