Yes.

• If you are performing an obligatory prayer behind an Imam and the Imam prolongs sajda, you can make dua during that time. However, if the Imam raises his head from sajda, you must follow him and rise as well.

• If you are performing the obligatory prayer alone, you can make the duas as long as you wish.
• Similarly, if you are leading the prayer as the Imam, you can make duas, but it is better not to prolong them excessively out of consideration for the followers.